Yafei Zhang

Yafei Zhang

Shanghai Jiao Tong University

H-index: 170

Asia-China

Yafei Zhang Information

University

Shanghai Jiao Tong University

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Citations(all)

118562

Citations(since 2020)

51012

Cited By

101383

hIndex(all)

170

hIndex(since 2020)

104

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895

i10Index(since 2020)

647

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Shanghai Jiao Tong University

Top articles of Yafei Zhang

Observation of decays to and

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,H Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2024/3/18

Using a data sample of 4.481× 10 8 ψ (3686) events collected with the BESIII detector, we report the first observation of the four-lepton-decays J/ψ→ e+ e− e+ e− and J/ψ→ e+ e− μ+ μ− utilizing the process ψ (3686)→ π+ π− J/ψ. The branching fractions are determined to be [5.48±0.31 (stat)±0.45 (syst)]× 10− 5 and [3.53±0.22 (stat)±0.13 (syst)]× 10− 5, respectively. The results are consistent with theoretical predictions. No significant signal is observed for J/ψ→ μ+ μ− μ+ μ−, and an upper limit on the branching fraction is set at 1.6× 10− 6 at the 90% confidence level. A C P asymmetry observable is constructed for the first two channels, which is measured to be (− 0.012±0.054±0.010) and (0.062±0.059±0.006), respectively. No evidence for C P violation is observed in this process.

Molecular-level uniform graphene/polyaniline composite film for flexible supercapacitors with high-areal capacitance

Authors

Peiyao Wang,Feng Shao,Bin Li,Yanjie Su,Zhi Yang,Nantao Hu,Yafei Zhang

Journal

Nanotechnology

Published Date

2023/2/13

To increase the specific capacitance of supercapacitors, polyaniline (PANI) has been chosen as additive electrode material for the pseudocapacitive performance. Here, we synthesize a molecular-level uniform reduced graphene oxide/PANI (rGO/PANI) composite film with high flexibility and conductivity via self-assembly and specific thermal reduction, which performs great potential in flexible supercapacitors with high areal capacitance. Particularly, the electrode of rGO/PANI-42.9% exhibits a high specific areal capacitance (1826 mF cm− 2 at 0.2 mA cm− 2), and it also presents a good cycling stability (it remains 76% of its initial capacitance after 10 500 cycles). Moreover, the specific gravimetric capacitance of rGO/PANI-33.3% reaches up to 256.4 F g− 1 at 0.2 A g− 1, showing greatly enhanced performance compared with the pure rGO electrode (183 F g− 1). The results of various characteristic analysis …

Gas sensing performance and charge-transfer mechanism of semiconducting single-walled carbon nanotubes

Authors

Tian Tian,Huan Yin,Luoxi Zhang,Mingkui Zhu,Defu Ma,Feng Shao,Nantao Hu,Zhi Yang,Yafei Zhang,Yanjie Su

Journal

Applied surface science

Published Date

2023/1/30

Large specific surface areas and unique monolayer atomic structures enable single-walled carbon nanotubes (SWCNTs) to exhibit highly local-environment-sensitive electrical properties, which have been demonstrated to be ideal candidates for the next-generation sensing nanodevices. However, the interfacial interaction between gas molecules and SWCNTs has not been investigated experimentally so far. Herein, (6, 5)-enriched semiconducting SWCNTs have been used to fabricate room-temperature gas sensors, which exhibits a high sensitivity of 232 % toward 1 ppm nitrogen dioxide (NO2) at room temperature. Importantly, the sensing mechanism has been first investigated according to the Raman shift of 2D peak in SWCNTs, which provides direct evidence for the interfacial charge transfer between NO2 molecules and SWCNTs. Moreover, an exponential relationship between the 2D peak position and NO2 …

Amplitude analysis and branching fraction measurement of the decay D+ → π+π0π0

Authors

M Kuemmel,MX Luo,FF Sui,XR Zhou,JB Liu,T Hussain,T Held,XH Sun,M Kuessner,FH Heinsius,JY Zhang,LY Dong,L Xia,T Li,JH Yin,SF Zhang,X Tang,M Qi,S Lusso,Y Hu,XK Zhou,SL Olsen,Ling Zhao,G Mezzadri,YM Ma,LH Wu,YF Long,WL Chang,M Rolo,S Zhu,A Mangoni,XS Jiang,QP Ji,JY Liu,A Zhemchugov,L Yan,K Goetzen,JL Zhang,K Peters,A Rivetti,HP Peng,WX Gong,YG Gao,M Kornicer,XR Lyu,MH Gu,RP Guo,XT Huang,M Wang,S Pacetti,B Zheng,FC Ma,SB Liu,BS Zou,I Boyko,M Destefanis,SX Du,ZQ Yang,Fang Liu,M Albrecht,D Wang,MN Achasov,XS Qin,JZ Zhang,Cheng Li,Ke Liu,A Kupsc,Q Gao,B Liu,F Cossio,SA Cetin,Y Ban,SJ Chen,JS Lange,YB Liu,T Weber,BY Zhang,YT Tan,YZ Sun,Q Zhou,U Wiedner,YK Heng,W Shan,KL He,T Hu,ZX Meng,HY Sheng,LS Wang,X Xia,C Dong,J Pellegrino,Z Jiao,LL Ma,ZH Qin,RG Ping,WD Li,X Shi,DP Jin,G Rong,D Bettoni,WM Song,CD Fu,S Marcello,YH Yang,Z Ning,J Pettersson,KY Liu,Z Haddadi,A Calcaterra,Feng Liu,N Yu Muchnoi,CF Redmer,M Richter,HM Liu,L Zhou,N Berger,I Uman,MH Ye,S Sosio,HH Wang,YT Gu,I Garzia,XY Niu,CX Yu,Huihui Liu,Q An,JQ Zhang,CJ Tang,A Denig,J Zhang,YB Zhao,D Dedovich,J Libby,L Xu,OB Kolcu,YS Zhu,IK Keshk,S Han,XY Ma,XZ Huang,YT Zhang,HB Li,A Guskov,SH Zhu,N Qin,DM Li,QL Xiu,TJ Zhang,M Tiemens,M Shao

Journal

Physical Review D

Published Date

2019/5/31

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External condition-induced interfacial charge transfer in single-walled carbon nanotube/graphene van der Waals heterostructures

Authors

Huan Yin,Ruxuan Zhang,Tian Tian,Zhi Yang,Nantao Hu,Yafei Zhang,Yanjie Su

Journal

Journal of Materials Chemistry C

Published Date

2023

Single-walled carbon nanotube (SWCNT)/graphene van der Waals (vdW) heterostructures have shown great potential for use in high-performance carbon-based heterojunction nanodevices owing to their strong interfacial coupling effects and unique physical and chemical properties. However, the interfacial charge transfer process and related influencing factors, which are crucial in determining device performance, have not been adequately investigated. Herein, we systematically investigate the interfacial charge transfer between SWCNTs and graphene using Raman spectroscopy under different external conditions, including bias voltage, temperature, and atmosphere. Our results indicate that electrons are transferred from SWCNTs to graphene when the applied voltage deviates from the neutral point voltage of −4 V. Under various atmospheric and temperature conditions, the built-in electric field induces the …

Measurement of cross sections at center-of-mass energies from 2.00 to 3.08 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,ZH Duan,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,XT Hou,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,JH Jeong,Q Ji,QP Ji,XB Ji

Journal

Physical Review D

Published Date

2023/8/15

Using data corresponding to an integrated luminosity of 651 pb− 1 accumulated at 22 center-of-mass energies from 2.00 to 3.08 GeV by the BESIII experiment, the process e+ e−→ ϕ π+ π− is studied. The cross sections for e+ e−→ ϕ π+ π− are consistent with previous results, but with improved precision. To measure the mass and width of the structure observed in the cross section line shape, a combine fit is performed after enhancing the contribution from ϕ f 0 (980). The fit reveals a structure with the mass of M= 2178±20±5 MeV/c 2 and the width of Γ= 140±36±16 MeV, where the first uncertainties are statistical and the second ones are systematic.

High-Performance Broadband Photodetectors Based on Asymmetric All-Carbon Nano-Heterostructures

Authors

Huan Yin,Tian Tian,Ruxuan Zhang,Luoxi Zhang,Mingkui Zhu,Tianhao Zhang,Zhi Yang,Nantao Hu,Yafei Zhang,Yanjie Su

Journal

ACS Applied Nano Materials

Published Date

2023/6/26

All-carbon nano-heterostructure photodetectors based on different carbon allotropes demonstrate excellent photoelectric performance due to their ultrahigh carrier mobility, excellent optoelectronic properties, and strong interfacial coupling effects. However, the further improvement of device performance is still limited by the interfacial charge transfer and the large dark current of graphene. Herein, asymmetric all-carbon nano-heterostructures have been designed as active channels to fabricate C60/graphene/single-walled carbon nanotube (SWCNT) heterojunction photodetectors. With an optimal C60 thickness of 35 nm, the asymmetric C60/graphene/SWCNT photodetector exhibits excellent broadband photoelectric response from the visible to NIR range (405–1064 nm) with a high responsivity of 4568 A W–1 @ 940 nm, an ultrahigh detectivity of 3.56 × 1014 Jones @ 940 nm, and a fast response time of 2.57 ms …

A novel BiVO4/DLC heterojunction for efficient photoelectrochemical water splitting

Authors

Hewei Yuan,Yaozhong Zhang,Yanjie Su,Nantao Hu,Jianhua Yang,Min Zeng,Zhi Yang,Yafei Zhang

Journal

Chemical Engineering Journal

Published Date

2023/3/1

Photoelectrochemical (PEC) water splitting is a promising technology to produce renewable hydrogen, which still faces problems of low photoelectric efficiency and instability. This work introduces a novel Type II heterojunction consisting of BiVO4 thin film and diamond-like carbon (DLC) to the PEC system as a photoanode and achieves an increased PEC water-splitting activity. Compared to the pure BiVO4, the BiVO4/DLC heterojunction has an increased photocurrent density from 0.79ámAácm−2 to 2.39ámAácm−2 at 1.23áV vs RHE, and the IPCE from 4.8á% to 23.4á%. After 120ámin (180 cycles) of PEC water splitting, the BiVO4/DLC heterojunction retains up to 82.3á% of the initial photocurrent density value, while the pure BiVO4 has only 33.99á% remaining under the same conditions. Furthermore, the PEC system of BiVO4/DLC reaches the evolution rate of hydrogen of over 0.32ámmoláh−1ácm−2, which is …

Partial wave analysis of

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,M Alekseev,A Amoroso,FF An,Q An,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,J Chai,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,JC Chen,ML Chen,SJ Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,JZ Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,MG Kurth

Journal

Physical Review D

Published Date

2019/8/14

A partial-wave analysis of the decay J/ψ→ K+ K− π 0 has been made using (223.7±1.4)× 10 6 J/ψ events collected with the BESIII detector in 2009. The analysis, which is performed within the isobar-model approach, reveals contributions from K 2*(1430)±, K 2*(1980)±and K 4*(2045)±decaying to K±π 0. The two latter states are observed in J/ψ decays for the first time. Two resonance signals decaying to K+ K− are also observed. These contributions cannot be reliably identified and their possible interpretations are discussed. The measured branching fraction B (J/ψ→ K+ K− π 0) of (2.88±0.01±0.12)× 10− 3 is more precise than previous results. Branching fractions for the reported contributions are presented as well. The results of the partial-wave analysis differ significantly from those previously obtained by BESII and BABAR.

Number of J/ψ events at BESIII

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Chinese Physics C

Published Date

2022/7/1

LM Gu (谷立民) 35 MH Gu (顾旻皓) 1, 50 C. Y Guan (关春懿) 1, 55 AQ Guo (郭爱强) 22 AQ Guo (郭爱强) 25 LB Guo (郭立波) 34 RP Guo (郭如盼) 41 YP Guo (郭玉萍) 9, f A. Guskov29, a TT Han (韩婷婷) 42 WY Han (韩文颖) 32 XQ Hao (郝喜庆) 15 FA Harris57 KK He (何凯凯) 47

Observation of the doubly Cabibbo-suppressed decays D+→ K+ π0π0 and D+→ K+ π0η

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc

Journal

Journal of High Energy Physics

Published Date

2022/9

By analyzing e+ e− annihilation data corresponding to an integrated luminosity of 2. 93 fb− 1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we report the first observations of the doubly Cabibbo-suppressed decays D+→ K+ π 0 π 0 and D+→ K+ π 0 η. The branching fractions of D+→ K+ π 0 π 0 and D+→ K+ π 0 η are measured to be (2. 1±0. 4 stat±0. 1 syst)× 10− 4 and (2. 1±0. 5 stat±0. 1 syst)× 10− 4 with statistical significances of 8.8σ and 5.5σ, respectively. In addition, we search for the subprocesses D+→ K*(892)+ π 0 and D+→ K*(892)+ η with K*(892)+→ K+ π 0. The branching fraction of D+→ K*(892)+ η is determined to be (±0. 2 syst)× 10− 4, with a statistical significance of 3.2σ. No significant signal for D+→ K*(892)+ π 0 is found and we set an upper limit on the branching fraction of this decay at the 90% confidence level to be 5. 4× 10− 4.

A Novel Artificial Neuron-Like Gas Sensor Constructed from CuS Quantum Dots/Bi2S3 Nanosheets

Authors

Xinwei Chen,Tao Wang,Jia Shi,Wen Lv,Yutong Han,Min Zeng,Jianhua Yang,Nantao Hu,Yanjie Su,Hao Wei,Zhihua Zhou,Zhi Yang,Yafei Zhang

Journal

Nano-Micro Letters

Published Date

2022/12

Real-time rapid detection of toxic gases at room temperature is particularly important for public health and environmental monitoring. Gas sensors based on conventional bulk materials often suffer from their poor surface-sensitive sites, leading to a very low gas adsorption ability. Moreover, the charge transportation efficiency is usually inhibited by the low defect density of surface-sensitive area than that in the interior. In this work, a gas sensing structure model based on CuS quantum dots/Bi2S3 nanosheets (CuS QDs/Bi2S3 NSs) inspired by artificial neuron network is constructed. Simulation analysis by density functional calculation revealed that CuS QDs and Bi2S3 NSs can be used as the main adsorption sites and charge transport pathways, respectively. Thus, the high-sensitivity sensing of NO2 can be realized by designing the artificial neuron-like sensor. The experimental results showed that the CuS …

Observation of the Singly Cabibbo Suppressed Decay

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Yang Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical review letters

Published Date

2022/4/4

The singly Cabibbo-suppressed decay Λ c+→ n π+ is observed for the first time with a statistical significance of 7.3 σ by using 3.9 fb− 1 of e+ e− collision data collected at center-of-mass energies between 4.612 and 4.699 GeV with the BESIII detector at BEPCII. The branching fraction of Λ c+→ n π+ is measured to be (6.6±1. 2 stat±0. 4 syst)× 10− 4. By taking the upper limit of branching fractions of Λ c+→ p π 0 from the Belle experiment, the ratio of branching fractions between Λ c+→ n π+ and Λ c+→ p π 0 is calculated to be larger than 7.2 at the 90% confidence level, which disagrees with most predictions of the available phenomenological models. In addition, the branching fractions of the Cabibbo-favored decays Λ c+→ Λ π+ and Λ c+→ Σ 0 π+ are measured to be (1.31±0.0 8 stat±0.0 5 syst)× 10− 2 and (1.22±0.0 8 stat±0.0 7 syst)× 10− 2, respectively, which are consistent with previous results.

Search for baryon- and lepton-number violating decays and

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Ya Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Physical Review D

Published Date

2022/2/18

Using an electron-positron collision data sample corresponding to an integrated luminosity of 2.93 fb− 1 collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we search for the baryon-number and lepton-number violating decays D 0→ p e+ and D 0→ p e−. No obvious signals are found with the current statistics. The upper limits on the branching fractions for D 0→ p e+ and D 0→ p e− are set to be 1.2× 10− 6 and 2.2× 10− 6 at 90% confidence level, respectively.

Search for a -odd light Higgs boson in

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2022/1/21

Using J/ψ radiative decays from 9.0 billion J/ψ events collected by the BESIII detector, we search for di-muon decays of a C P-odd light Higgs boson (A 0), predicted by many new physics models beyond the Standard Model, including the next-to-minimal supersymmetric Standard Model. No evidence for the C P-odd light Higgs production is found, and we set 90% confidence level upper limits on the product branching fraction B (J/ψ→ γ A 0)× B (A 0→ μ+ μ−) in the range of (1.2− 778.0)× 10− 9 for 0.212≤ m A 0≤ 3.0 GeV/c 2. The new measurement is a 6–7 times improvement over our previous measurement, and is also slightly better than the BABAR measurement in the low-mass region for tan β= 1.

Search for new hadronic decays of hc and observation of hc →

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Journal of High Energy Physics

Published Date

2022/5

A search for the hadronic decays of the h c meson to the final states π+ π− π 0,, and π 0 via the process ψ (3686)→ π 0 h c is performed using (4. 48±0. 03)× 10 8 ψ (3686) events collected with the BESIII detector. The decay channel h c→ is observed for the first time with a significance greater than 5σ and a branching fraction of (6. 41±1. 74±0. 53±1. 00)× 10− 4, where the uncertainties are statistical, systematic, and that from the branching fraction of ψ (3686)→ π 0 h c. Strong evidence for the decay h c→ π+ π− π 0 is found with a significance of 4. 9σ and a branching fraction of (3. 84±0. 83±0. 69±0. 58)× 10− 3. The significances include systematic uncertainties. No clear signal of the decay h c→ π 0 is found, and an upper limit of 6. 59× 10− 4 on its branching fraction is set at the 90% confidence level.

Cross section measurements of the processes e+ e−→ ωπ0 and ωη at center-of-mass energies between 3.773 and 4.701 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk

Journal

Journal of High Energy Physics

Published Date

2022/7

The Born cross sections of the processes e+ e−→ ωπ 0 and e+ e−→ ωη are measured at center-of-mass energies between 3.773 and 4.701 GeV using a total integrated luminosity of 22.7 fb− 1 collected with the BESIII detector operating at the BEPCII collider. A simple s− n dependence for the continuum process can describe the measured Born cross sections. No significant contributions from the ψ (4160), Y (4230), Y (4360), ψ (4415), Y (4660) resonances are found, which indicates relative small branching fractions for these resonances into the ωπ 0 and ωη final states.

Measurement of the e+ e−→ Σ0Σ¯ 0 cross sections at center-of-mass energies from 2.3864 to 3.0200 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,A Amoroso,Q An,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RB de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,Z Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,MG Kurth,W Kühn,JJ Lane

Journal

Physics Letters B

Published Date

2022/8/10

The Born cross sections of e+ e−→ Σ 0 Σ¯ 0 are measured at center-of-mass energies from 2.3864 to 3.0200 GeV using data samples with an integrated luminosity of 328.5 pb− 1 collected with the BESIII detector operating at the BEPCII collider. The analysis makes use of a novel reconstruction method for energies near production threshold, while a single-tag method is employed at other center-of-mass energies. The measured cross sections are consistent with earlier results from BaBar, with a substantially improved precision. The cross-section lineshape can be well described by a perturbative QCD-driven energy function. In addition, the effective form factors of the Σ 0 baryon are determined. The results provide precise experimental input for testing various theoretical predictions.

Measurement of integrated luminosities at BESIII for data samples at center-of-mass energies between 4.0 and 4.6 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk

Journal

Chinese Physics C

Published Date

2022/11/1

In recent years, newly discovered charmonium-like states have attracted great attention owing to their exotic properties [1− 4]. These states are above the open-charm threshold, and their strong coupling to hidden-charm processes suggests that they could be candidates for unconventional charmonium states. The study of the properties of these states, through either verifying or excluding possible interpretations about their exotic nature (such as molecular states, tetraquark states, and hybrid states), or establishing the connection between these states and higher excited charmonium states, has the potential to provide more insight into the quark model and a better understanding of quantum chromodynamics (QCD). e+ e−The BESIII experiment [5], which operates at the τ-charm factory BEPCII[6], has collected the world's largest collision data samples at center-of-mass (CM) energies between 3.81 and 4.60 GeV [7 …

Cross section measurements of the e+ e−→ D*+ D*− and e+ e−→ D*+ D− processes at center-of-mass energies from 4.085 to 4.600 GeV

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,Rinaldo Baldini Ferroli,Ilaria Balossino,Yong Ban,V Batozskaya,D Becker,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Anja Brüggemann,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CF Fritzsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson

Journal

Journal of High Energy Physics

Published Date

2022/5

The Born cross sections of the e+ e−→ D*+ D*− and e+ e−→ D*+ D− processes are measured using e+ e− collision data collected with the BESIII experiment at center-of-mass energies from 4.085 to 4.600 GeV, corresponding to an integrated luminosity of 15. 7 fb− 1. The results are consistent with and more precise than the previous measurements by the Belle, Babar and CLEO collaborations. The measurements are essential for understanding the nature of vector charmonium and charmonium-like states.

First Measurement of Polarizations in the Decay

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical review letters

Published Date

2022/1/7

Using a data sample corresponding to an integrated luminosity of 2.93 fb− 1 collected at a center-of-mass energy s= 3.773 GeV by the BESIII detector, the decay D 0→ ω ϕ is observed for the first time. The branching fraction is measured to be (6.48±0.96±0.40)× 10− 4 with a significance of 6.3 σ, where the first and second uncertainties are statistical and systematic, respectively. An angular analysis reveals that the ϕ and ω mesons from the D 0→ ω ϕ decay are transversely polarized. The 95% confidence level upper limit on longitudinal polarization fraction is set to be less than 0.24, which is inconsistent with current theoretical expectations and challenges our understanding of the underlying dynamics in charm meson decays.

Study of the decay and observation of an isovector partner to

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Yang Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2022/3/23

Using e+ e− annihilation data corresponding to a total integrated luminosity of 6.32 f b− 1 collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis of the decay D s+→ K S 0 K S 0 π+ for the first time. An enhancement is observed in the K S 0 K S 0 mass spectrum near 1.7 GeV/c 2, which was not seen in D s+→ K+ K− π+ in an earlier work, implying the existence of an isospin one partner of the f 0 (1710). The branching fraction of the decay D s+→ K S 0 K S 0 π+ is determined to be B (D s+→ K S 0 K S 0 π+)=(0.68±0.0 4 stat±0.0 1 syst)%.

Measurement of the cross section at center-of-mass energies from 2.0 to 3.08 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin

Journal

Physical Review D

Published Date

2022/2/16

The cross section of the process e+ e−→ ω π 0 π 0 is measured at nineteen center-of-mass energies from 2.0 to 3.08 GeV using data collected with the BESIII detector at the BEPCII storage ring. A resonant structure around 2.20 GeV is observed with statistical significance larger than 5 σ. Using a coherent fit to the cross section line shape, the mass and width are determined to be M= 2222±7±2 MeV/c 2 and Γ= 59±30±6 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.

Observation of a State in the System in the Process

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk

Journal

Physical Review Letters

Published Date

2022/7/19

Based on (10 087±44)× 10 6 J/ψ events collected with the BESIII detector, the process J/ψ→ γ π+ π− η′ is studied using two largest decay channels of the η′ meson, η′→ γ π+ π− and η′→ η π+ π−, η→ γ γ. A new resonance, which we denote as the X (2600), is observed with a statistical significance larger than 20 σ in the π+ π− η′ invariant mass spectrum, and it has a connection to a structure around 1.5 GeV/c 2 in the π+ π− invariant mass spectrum. A simultaneous fit on the π+ π− η′ and π+ π− invariant mass spectra with the two η′ decay modes indicates that the mass and width of the X (2600) state are 2618.3±2. 0− 1.4+ 16.3 MeV/c 2 and 195±5− 17+ 26 MeV, where the first uncertainties are statistical, and the second systematic.

Observation of an Isoscalar Resonance with Exotic Quantum Numbers in

Authors

M Ablikim,MN Achasov,Patrik Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk

Journal

Physical review letters

Published Date

2022/10/31

Using a sample of (10.09±0.04)× 10 9 J/ψ events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay J/ψ→ γ η η′ is performed. The first observation of an isoscalar state with exotic quantum numbers J P C= 1−+, denoted as η 1 (1855), is reported in the process J/ψ→ γ η 1 (1855) with η 1 (1855)→ η η′. Its mass and width are measured to be (1855±9− 1+ 6) MeV/c 2 and (188±18− 8+ 3) MeV, respectively, where the first uncertainties are statistical and the second are systematic, and its statistical significance is estimated to be larger than 19 σ.

Measurement of e+ e−→ K+ K− π0 cross section and observation of a resonant structure

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz

Journal

Journal of High Energy Physics

Published Date

2022/7

Based on e+ e− collision data collected by the BESIII detector at the BEPCII collider at center-of-mass energies from 2.000 to 3.080 GeV, a partial-wave analysis is performed for the process e+ e−→ K+ K− π 0. The Born cross section of the process e+ e−→ K+ K− π 0 and its subprocesses e+ e−→ ϕπ 0, K*+(892) K− and(1430) K− are measured. The results for e+ e−→ K+ K− π 0 and ϕπ 0 are consistent with the BaBar measurements and with improved precision. By analyzing the cross sections of the subprocesses e+ e−→ K*+(892) K− and(1430) K−, a structure with mass M R=(2190±19±37) MeV/c 2 and width Γ R=(191±28±60) MeV is observed with a combined statistical significance of 7.1σ. The measured resonance parameters suggest it can be identified as the ϕ (2170), thus the results provide valuable input to understand the internal nature of this state.

Observation of and improved measurement of

Authors

Medina Ablikim,Mikhail N Achasov,S Ahmed,Malte Albrecht,Maxim Alekseev,Antonio Amoroso,FF An,Qi An,Yu Bai,Olga Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,DW Bennett,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,E Boger,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,SA Cetin,J Chai,JF Chang,WL Chang,G Chen,HS Chen,JC Chen,ML Chen,PL Chen,SJ Chen,XR Chen,YB Chen,W Cheng,XK Chu,G Cibinetto,F Cossio,HL Dai,JP Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,PF Duan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,Z Haddadi,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,ZL Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,M Kavatsyuk,BC Ke,IK Keshk,T Khan,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,W Kühn,JS Lange,P Larin,L Lavezzi,S Leiber,H Leithoff,C Li,Cheng Li

Journal

Physical Review D

Published Date

2018/11/14

By analyzing an e+ e− data sample corresponding to an integrated luminosity of 2.93 fb− 1 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we measure the branching fractions of the Cabibbo-favored hadronic decays D 0→ K− π+ η′, D 0→ K S 0 π 0 η′, and D+→ K S 0 π+ η′, which are determined to be (6.43±0.1 5 stat±0.3 1 syst)× 10− 3,(2.52±0.2 2 stat±0.1 5 syst)× 10− 3, and (1.90±0.1 7 stat±0.1 3 syst)× 10− 3, respectively. The precision of the branching fraction of D 0→ K− π+ η′ is significantly improved, and the processes D 0→ K S 0 π 0 η′ and D+→ K S 0 π+ η′ are observed for the first time.

Observation of the double Dalitz decay

Authors

M Ablikim,MN Achasov,Patrik Adlarson,Malte Albrecht,Riccardo Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,E Jang,JH Jeong,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang

Journal

Physical Review D

Published Date

2022/6/22

Based on (10087±44)× 10 6 J/ψ events collected with the BESIII detector at BEPCII, the double Dalitz decay η′→ e+ e− e+ e− is observed for the first time via the J/ψ→ γ η′ decay process. The significance is found to be 5.7 σ with systematic uncertainties taken into consideration. Its branching fraction is determined to be B (η′→ e+ e− e+ e−)=(4.5±1.0 (stat)±0.5 (sys))× 10− 6.

Search for and at BESIII

Authors

M Ablikim,MN Achasov,P Adlarson,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin

Journal

Physical Review D

Published Date

2022/4/29

Using 9.9 fb− 1 of e+ e− collision data collected by the BESIII detector at center-of-mass energies between 4.15 and 4.30 GeV, we search for the processes e+ e−→ γ X (3872) with X (3872)→ π 0 χ c 0 and X (3872)→ π π χ c 0. We set upper limits (at 90% CL) of B (X (3872)→ π 0 χ c 0) B (X (3872)→ π+ π− J/ψ)< 3.6, B (X (3872)→ π+ π− χ c 0) B (X (3872)→ π+ π− J/ψ)< 0.56, and B (X (3872)→ π 0 π 0 χ c 0) B (X (3872)→ π+ π− J/ψ)< 1.7. Combined with the BESIII measurement of X (3872)→ π 0 χ c 1, we also set an upper limit of B (X (3872)→ π 0 χ c 0) B (X (3872)→ π 0 χ c 1)< 4.5.

Study of the processes and

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,H Gao,YN Gao,Yang Gao,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

arXiv preprint arXiv:2202.08058

Published Date

2022/2/16

Using decays collected with the BESIII detector at the BEPCII storage rings, the branching fractions and angular distributions of the decays and are measured based on a partial-reconstruction technique. The decays and are observed for the first time with statistical significances of 7 and 15, respectively. The results of this analysis are in good agreement with previous measurements and have significantly improved precision.

Measurement of baryon polarization in at

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Yang Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2022/1/4

Using a data sample of ψ (3770) events collected with the BESIII detector at BEPCII corresponding to an integrated luminosity of 2.9 fb− 1, we report a measurement of Λ spin polarization in e+ e−→ Λ Λat s= 3.773 GeV. The significance of polarization is found to be 2 σ including the systematic uncertainty, which implies a zero phase between the transition amplitudes of the Λ Λhelicity states. This phase can be interpreted in terms of psionic form factors, and is determined to be Δ Φ Ψ= Φ E Ψ− Φ M Ψ=(7 1− 46+ 66±5). Similarly, the ratio between the form factors is found to be R ψ=| G E Ψ/G M Ψ|= 0.4 8− 0.35+ 0.21±0.03. The first uncertainties are statistical and the second systematic.

First measurement of high-energy reactor antineutrinos at Daya Bay

Authors

FP An,WD Bai,AB Balantekin,M Bishai,S Blyth,GF Cao,J Cao,JF Chang,Y Chang,HS Chen,HY Chen,SM Chen,Y Chen,YX Chen,J Cheng,ZK Cheng,JJ Cherwinka,MC Chu,JP Cummings,O Dalager,FS Deng,YY Ding,MV Diwan,T Dohnal,D Dolzhikov,J Dove,DA Dwyer,JP Gallo,M Gonchar,GH Gong,H Gong,WQ Gu,JY Guo,L Guo,XH Guo,YH Guo,Z Guo,RW Hackenburg,S Hans,M He,KM Heeger,YK Heng,YK Hor,YB Hsiung,BZ Hu,JR Hu,T Hu,ZJ Hu,HX Huang,JH Huang,XT Huang,YB Huang,P Huber,DE Jaffe,KL Jen,XL Ji,XP Ji,RA Johnson,D Jones,L Kang,SH Kettell,S Kohn,M Kramer,TJ Langford,J Lee,JHC Lee,RT Lei,R Leitner,JKC Leung,F Li,HL Li,JJ Li,QJ Li,RH Li,S Li,SC Li,WD Li,XN Li,XQ Li,YF Li,ZB Li,H Liang,CJ Lin,GL Lin,S Lin,JJ Ling,JM Link,L Littenberg,BR Littlejohn,JC Liu,JL Liu,JX Liu,C Lu,HQ Lu,KB Luk,BZ Ma,XB Ma,XY Ma,YQ Ma,RC Mandujano,C Marshall,KT McDonald,RD McKeown,Y Meng,J Napolitano,D Naumov,E Naumova,TMT Nguyen,JP Ochoa-Ricoux,A Olshevskiy,H-R Pan,J Park,S Patton,JC Peng,CSJ Pun,FZ Qi,M Qi,X Qian,N Raper,J Ren,C Morales Reveco,R Rosero,B Roskovec,XC Ruan,H Steiner,JL Sun,T Tmej,K Treskov,W-H Tse,CE Tull,B Viren,V Vorobel,CH Wang,J Wang,M Wang,NY Wang,RG Wang,W Wang,X Wang,Y Wang,YF Wang,Z Wang,ZM Wang,HY Wei,LH Wei,LJ Wen,K Whisnant,CG White,HLH Wong,E Worcester

Journal

Physical review letters

Published Date

2022/7/18

This Letter reports the first measurement of high-energy reactor antineutrinos at Daya Bay, with nearly 9000 inverse beta decay candidates in the prompt energy region of 8–12 MeV observed over 1958 days of data collection. A multivariate analysis is used to separate 2500 signal events from background statistically. The hypothesis of no reactor antineutrinos with neutrino energy above 10 MeV is rejected with a significance of 6.2 standard deviations. A 29% antineutrino flux deficit in the prompt energy region of 8–11 MeV is observed compared to a recent model prediction. We provide the unfolded antineutrino spectrum above 7 MeV as a data-based reference for other experiments. This result provides the first direct observation of the production of antineutrinos from several high-Q β isotopes in commercial reactors.

High-performance visible–near-infrared single-walled carbon nanotube photodetectors via interfacial charge-transfer-induced improvement by surface doping

Authors

Huan Yin,Luoxi Zhang,Mingkui Zhu,Yue Chen,Tian Tian,Yafei Zhang,Nantao Hu,Zhi Yang,Yanjie Su

Journal

ACS Applied Materials & Interfaces

Published Date

2022/9/15

Single-walled carbon nanotubes (SWCNTs) are considered to be promising candidates for next-generation near-infrared (NIR) photodetectors due to their extraordinary electrical and optical properties. However, the low separation efficiency of photogenerated carriers limits the full utilization of the potential of pristine SWCNTs as photoactive materials. Herein, we report a novel high-performance visible–NIR SWCNT-based photodetector via interfacial charge-transfer-induced improvement by Au nanoparticle (AuNP) surface doping. Under 1064 nm light illumination, the as-fabricated AuNP/SWCNT photodetector exhibits an excellent photoelectrical performance with a responsivity of 2.16 × 105 A/W and a high detectivity of 1.82 × 1014 Jones, which is three orders of magnitude higher than that of the SWCNT photodetector under the same conditions. Importantly, the interfacial charge transfer between AuNPs and …

Three-dimensional Au nanoparticles-decorated γ-Fe2O3@ reduced graphene oxide core-shell heterojunctions for highly sensitive room-temperature gas sensors

Authors

Cheng Zou,Defu Ma,Yanjie Su,Mingkui Zhu,Bo Zhou,Feng Shao,Nantao Hu,Zhi Yang,Haijiao Xie,Yafei Zhang

Journal

Ceramics International

Published Date

2022/12/15

Au nanoparticles (Au NPs)-decorated three-dimensional (3D) reduced graphene oxide (RGO)-wrapped γ-Fe2O3 nanospheres (γ-Fe2O3@RGO) heterojunctions have been synthesized via a combination of self-assembly and in-suit ultrasound-induced decoration method. The Au NPs-decorated γ-Fe2O3@RGO (γ-Fe2O3@RGO-Au) heterojunctions sensor exhibits an excellent response of 384% to 50 ppm NO2 at room temperature, which is enhanced compared to the sensors based on bare RGO (35%) and γ-Fe2O3@RGO (243%). Furthermore, the calculation based on density functional theory (DFT) has been used to simulate the interaction between NO2 gas and sensing materials, thereby providing a theoretical basis for our experimental results. Moreover, the enhanced gas-sensing properties of γ-Fe2O3@RGO-Au have been explained by combing the 3D structure, the as-formed heterojunctions with chemical …

Study of light scalar mesons through and decays

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Yang Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2022/2/24

Using 6.32 fb− 1 of e+ e− collision data recorded by the BESIII detector at center-of-mass energies between 4.178 to 4.226 GeV, we present the first measurement of the decay D s+→ f 0 (980) e+ ν e, f 0 (980)→ π 0 π 0. The product branching fraction of D s+→ f 0 (980) e+ ν e, f 0 (980)→ π 0 π 0 is measured to be (7.9±1. 4 stat±0. 4 syst)× 10− 4, with a statistical significance of 7.8 σ. Furthermore, the upper limits on the product branching fractions of D s+→ f 0 (500) e+ ν e with f 0 (500)→ π 0 π 0 and the branching fraction of D s+→ K S 0 K S 0 e+ ν e are set to be 7.3× 10− 4 and 3.8× 10− 4 at 90% confidence level, respectively. Our results provide valuable inputs to the understanding of the structures of light scalar mesons.

Measurement of the branching fraction of the doubly Cabibbo-suppressed decay and search for

Authors

M Ablikim,MN Achasov,P Adlarson,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson

Journal

Physical Review D

Published Date

2022/6/9

Using 2.93 fb− 1 of e+ e− collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we present a measurement of the branching fraction of the doubly Cabibbo-suppressed (DCS) decay D 0→ K+ π− π 0 and a search for the DCS decay D 0→ K+ π− π 0 π 0. The branching fraction of D 0→ K+ π− π 0 is determined to be [3.1 3− 0.56+ 0.60 (stat)±0.15 (syst)]× 10− 4. No signal is observed for D 0→ K+ π− π 0 π 0, and an upper limit of 3.6× 10− 4 is set on the branching fraction at the 90% CL. We combine these results with the world-average branching fractions of their counterpart Cabibbo-favored decays to determine the ratios of the DCS over the Cabibbo-favored branching fractions, B (D 0→ K+ π− π 0)/B (D 0→ K− π+ π 0)=(0.22±0.04)% and B (D 0→ K+ π− π 0 π 0)/B (D 0→ K− π+ π 0 π 0)< 0.40% at the 90% CL which correspond to (0.75±0.14) tan 4 θ C and 1.37× tan 4 θ C, respectively …

Search for the decay

Authors

T Pang,V Savinov,I Adachi,H Aihara,DM Asner,H Atmacan,V Aulchenko,T Aushev,R Ayad,V Babu,P Behera,K Belous,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,A Bobrov,D Bodrov,G Bonvicini,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,P Chang,A Chen,BG Cheon,K Chilikin,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Cunliffe,S Das,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,D Dossett,S Dubey,D Epifanov,T Ferber,A Frey,BG Fulsom,R Garg,V Gaur,N Gabyshev,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,S Halder,K Hayasaka,H Hayashii,MT Hedges,C-L Hsu,T Iijima,K Inami,G Inguglia,A Ishikawa,R Itoh,M Iwasaki,Y Iwasaki,WW Jacobs,E-J Jang,S Jia,Y Jin,KK Joo,J Kahn,D Kalita,AB Kaliyar,KH Kang,G Karyan,T Kawasaki,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodyš,T Konno,A Korobov,S Korpar,E Kovalenko,P Križan,R Kroeger,P Krokovny,T Kuhr,R Kumar,K Kumara,A Kuzmin,Y-J Kwon,Y-T Lai,T Lam,JS Lange,SC Lee,CH Li,J Li,LK Li,Y Li,L Li Gioi,J Libby,K Lieret,D Liventsev,A Martini,M Masuda,T Matsuda,D Matvienko,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Niiyama,NK Nisar,S Nishida,K Ogawa,S Ogawa,H Ono,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,S-H Park,A Passeri,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,V Popov

Journal

Physical Review D

Published Date

2022/9/22

We report the results of the first search for the decay B s 0→ η′ K S 0 using 121.4 fb− 1 of data collected at the ϒ (5 S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e− collider. We observe no signal and set a 90% confidence-level upper limit of 8.16× 10− 6 on the B s 0→ η′ K S 0 branching fraction.

Measurement of the Cross Section for at Energies from 2.2324 to 3.6710 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical review letters

Published Date

2022/2/10

Based on electron-positron collision data collected with the BESIII detector operating at the Beijing Electron-Positron Collider II storage rings, the value of R≡ σ (e+ e−→ hadrons)/σ (e+ e−→ μ+ μ−) is measured at 14 center-of-mass energies from 2.2324 to 3.6710 GeV. The resulting uncertainties are less than 3.0% and are dominated by systematic uncertainties.

Measurements of Absolute Branching Fractions of D-0-> KL (0) phi, KL (0) eta, KL (0) omega, and KL (0) eta'

Authors

BESIII Collaboration

Journal

Physical Review D

Published Date

2022

We report the first measurements of the absolute branching fractions of D-0 -> K-L(0)phi, D-0 -> K-L(0)eta, D-0 -> K-L(0)omega, and D-0 -> K-L(0)eta', by analyzing 2.93 fb(-1) of e(+) e(-) collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. Taking the world averages of the branching fractions of D-0 -> K-S(0)phi, D-0 -> K-S(0)eta, and D-0 -> K-S(0)eta', the K-S(0) - K-L(0) asymmetries R(D-0 , X) in these decay modes are obtained. The CP asymmetries in these decays are also determined. No significant CP violation is observed.

Observation of Electromagnetic Dalitz Decays to , , and

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical review letters

Published Date

2022/7/6

Using a sample of about 10 10 J/ψ events collected at a center-of-mass energy s= 3.097 GeV with the BESIII detector, the electromagnetic Dalitz decays J/ψ→ e+ e− π+ π− η′, with η′→ γ π+ π− and η′→ π+ π− η, have been studied. The decay J/ψ→ e+ e− X (1835) is observed with a significance of 15 σ, and also an e+ e− invariant-mass dependent transition form factor of J/ψ→ e+ e− X (1835) is presented for the first time. The intermediate states X (2120) and X (2370) are also observed in the π+ π− η′ invariant-mass spectrum with significances of 5.3 σ and 7.3 σ. The corresponding product branching fractions for J/ψ→ e+ e− X, X→ π+ π− η′[X= X (1835), X (2120), and X (2370)] are reported.

Observation of Resonance Structures in and Mass Measurement of

Authors

M Ablikim,MN Achasov,Patrik Adlarson,Malte Albrecht,Riccardo Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang,Y Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson

Journal

Physical Review Letters

Published Date

2022/9/2

Using a data sample corresponding to an integrated luminosity of 11.3 fb− 1 collected at center-of-mass energies from 4.23 to 4.70 GeV with the BESIII detector, we measure the product of the e+ e−→ π+ π− ψ 2 (3823) cross section and the branching fraction B [ψ 2 (3823)→ γ χ c 1]. For the first time, resonance structure is observed in the cross section line shape of e+ e−→ π+ π− ψ 2 (3823) with significances exceeding 5 σ. A fit to data with two coherent Breit-Wigner resonances modeling the s-dependent cross section yields M (R 1)= 4406.9±17.2±4.5 MeV/c 2, Γ (R 1)= 128.1±37.2±2.3 MeV, and M (R 2)= 4647.9±8.6±0.8 MeV/c 2, Γ (R 2)= 33.1±18.6±4.1 MeV. Though weakly disfavored by the data, a single resonance with M (R)= 4417.5±26.2±3.5 MeV/c 2, Γ (R)= 245±48±13 MeV is also possible to interpret data. This observation deepens our understanding of the nature of the vector charmoniumlike states. The …

Measurement of the cross section of e+ e−→ ηπ+ π− at center-of-mass energies from 3.872 GeV to 4.700 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,E Jang,JH Jeong,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,ZK Jia,HB Jiang,SS Jiang,XS Jiang

Journal

Journal of High Energy Physics

Published Date

2022/12

Using data samples with an integrated luminosity of 19 fb− 1 at twenty-eight center-of-mass energies from 3.872 GeV to 4.700 GeV collected with the BESIII detector at the BEPCII electron-positron collider, the process e+ e−→ ηπ+ π− and the intermediate process e+ e−→ ηρ 0 are studied for the first time. The Born cross sections are measured. No significant resonance structure is observed in the cross section lineshape.

Conducting polymer-bridged three-dimensional heterojunctions of reduced graphene oxide/γ-Fe2O3 hybrids for high-performance NO2 gas sensing

Authors

Cheng Zou,Jing Hu,Yanjie Su,Feng Shao,Tian Tian,Mingkui Zhu,Nantao Hu,Zhi Yang,Yafei Zhang

Journal

Results in Surfaces and Interfaces

Published Date

2022/5/1

Abstract Three-dimensional (3D) reduced graphene oxide (RGO) networks show potentials for highly sensitive gas sensors. However, many insulating materials are usually used during RGO assembly process, which inevitably hinder the electron transfer efficiency, and affect the gas sensing performance. In this work, 3D structures based on nanospheres of conducting polymer layer-bridged γ-Fe 2 O 3/RGO hybrids have been designed and demonstrated for NO 2 sensing. Polyaniline (PANI), as a conducting polymer, can not only serve as self-assembly reagents to construct 3D hybrid structures, but also play an important role in participating electron transfer through forming pn heterojunctions between interfaces of γ-Fe 2 O 3 and RGO. The manufactured γ-Fe 2 O 3@ PANI@ RGO sensors show a response as high as 911% when exposure to 50 ppm NO 2, being over 124 times those of bare two-dimensional …

Joint Determination of Reactor Antineutrino Spectra from and Fission by Daya Bay and PROSPECT

Authors

FP An,M Andriamirado,AB Balantekin,HR Band,CD Bass,DE Bergeron,D Berish,M Bishai,S Blyth,NS Bowden,CD Bryan,GF Cao,J Cao,JF Chang,Y Chang,HS Chen,SM Chen,Y Chen,YX Chen,J Cheng,ZK Cheng,JJ Cherwinka,MC Chu,T Classen,AJ Conant,JP Cummings,O Dalager,G Deichert,A Delgado,FS Deng,YY Ding,MV Diwan,T Dohnal,MJ Dolinski,D Dolzhikov,J Dove,M Dvořák,DA Dwyer,A Erickson,BT Foust,JK Gaison,A Galindo-Uribarri,JP Gallo,CE Gilbert,M Gonchar,GH Gong,H Gong,M Grassi,WQ Gu,JY Guo,L Guo,XH Guo,YH Guo,Z Guo,RW Hackenburg,S Hans,AB Hansell,M He,KM Heeger,B Heffron,YK Heng,YK Hor,YB Hsiung,BZ Hu,JR Hu,T Hu,ZJ Hu,HX Huang,JH Huang,XT Huang,YB Huang,P Huber,J Koblanski,DE Jaffe,S Jayakumar,KL Jen,XL Ji,XP Ji,RA Johnson,DC Jones,L Kang,SH Kettell,S Kohn,M Kramer,O Kyzylova,CE Lane,TJ Langford,J LaRosa,J Lee,JHC Lee,RT Lei,R Leitner,JKC Leung,F Li,HL Li,JJ Li,QJ Li,RH Li,S Li,SC Li,WD Li,XN Li,XQ Li,YF Li,ZB Li,H Liang,CJ Lin,GL Lin,S Lin,JJ Ling,JM Link,L Littenberg,BR Littlejohn,JC Liu,JL Liu,JX Liu,C Lu,HQ Lu,X Lu,KB Luk,BZ Ma,XB Ma,XY Ma,YQ Ma,RC Mandujano,J Maricic,C Marshall,KT McDonald,RD McKeown,MP Mendenhall,Y Meng,AM Meyer,R Milincic,PE Mueller,HP Mumm,J Napolitano,D Naumov,E Naumova,R Neilson,TMT Nguyen,JA Nikkel,S Nour,JP Ochoa-Ricoux,A Olshevskiy,JL Palomino,H-R Pan,J Park,S Patton,JC Peng,CSJ Pun

Journal

Physical review letters

Published Date

2022/2/22

A joint determination of the reactor antineutrino spectra resulting from the fission of U 235 and Pu 239 has been carried out by the Daya Bay and PROSPECT Collaborations. This Letter reports the level of consistency of U 235 spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant U 235 and Pu 239 isotopes and improves the uncertainty of the U 235 spectral shape to about 3%. The U 235 and Pu 239 antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the U 235 and Pu 239 spectra based on the combination of experiments at low-and …

Search for invisible decays of the baryon

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Yang Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2022/4/19

A search for invisible decays of the Λ baryon is carried out in the process J/ψ→ Λ Λbased on (1.0087±0.0044)× 10 10 J/ψ events collected with the BESIII detector located at the BEPCII storage ring. No signals are found for the invisible decays of Λ baryon, and the upper limit of the branching fraction is determined to be 7.4× 10− 5 at the 90% confidence level. This is the first search for invisible decays of baryons; such searches will play an important role in constraining dark sector models related to the baryon asymmetry.

Observation of the electromagnetic Dalitz decay

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2021/12/30

Based on 3.19 fb− 1 of e+ e− collision data accumulated at the center-of-mass energy 4.178 GeV with the BESIII detector operating at the BEPCII collider, the electromagnetic Dalitz decay D* 0→ D 0 e+ e− is observed for the first time with a statistical significance of 13.2 σ. The ratio of the branching fraction of D* 0→ D 0 e+ e− to that of D* 0→ D 0 γ is measured to be (11.08±0.76±0.49)× 10− 3. By using the world average value of the branching fraction of D* 0→ D 0 γ, the branching fraction of D* 0→ D 0 e+ e− is determined to be (3.91±0.27±0.17±0.10)× 10− 3, where the first uncertainty is statistical, the second is systematic and the third is from external input of the branching fraction for D* 0→ D 0 γ.

Oscillating features in the electromagnetic structure of the neutron

Journal

Nature Physics

Published Date

2021/11

The complicated structure of the neutron cannot be calculated using first-principles calculations due to the large colour charge of quarks and the self-interaction of gluons. Its simplest structure observables are the electromagnetic form factors, which probe our understanding of the strong interaction. Until now, a small amount of data has been available for the determination of the neutron structure from the time-like kinematical range. Here we present measurements of the Born cross section of electron–positron annihilation reactions into a neutron and anti-neutron pair, and determine the neutron’s effective form factor. The data were recorded with the BESIII experiment at centre-of-mass energies between 2.00 and 3.08 GeV using an integrated luminosity of 647.9 pb−1. Our results improve the statistics on the neutron form factor by more than a factor of 60 over previous measurements, demonstrating that the …

Search for the rare semi-leptonic decay J/ψ→ D− e+ νe+ cc

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,Rinaldo Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,H Cai,X Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Journal of high energy physics

Published Date

2021/6

Using 10. 1× 10 9 J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy= 3. 097 GeV and collected with the BESIII detector, we present a search for the rare semi-leptonic decay J/ψ→ D− e+ ν e+ cc No excess of signal above background is observed, and an upper limit on the branching fraction ℬ (J/ψ→ D− e+ ν e+ c. c.)< 7.1× 10− 8 is obtained at 90% confidence level. This is an improvement of more than two orders of magnitude over the previous best limit.

Observation of and

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,M Alekseev,A Amoroso,FF An,Q An,Y Bai,O Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,J Chai,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,JC Chen,ML Chen,SJ Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,JZ Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,T Khan,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,MG Kurth,W Kühn

Journal

Physical Review D

Published Date

2019/9/26

Using 448.1× 10 6 ψ (3686) events collected with the BESIII detector at BEPCII, we employ a single-baryon tagging technique to make the first observation of ψ (3686)→ Ξ (1530)− Ξ (1530)+ and Ξ (1530)− Ξ+ decays with a statistical significance of more than 10 σ and 5.0 σ, respectively. The branching fractions are measured to be B (ψ (3686)→ Ξ (1530)− Ξ (1530)+)=(11.45±0.40±0.59)× 10− 5 and B (ψ (3686)→ Ξ (1530)− Ξ+)=(0.70±0.11±0.04)× 10− 5. The angular distribution parameter for ψ (3686)→ Ξ (1530)− Ξ (1530)+ is determined to be α= 0.40±0.24±0.06, which agrees with the theoretical predictions within 1 σ. The first uncertainties are statistical, and the second systematic.

Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications

Authors

FP An,AB Balantekin,M Bishai,S Blyth,GF Cao,J Cao,JF Chang,Y Chang,HS Chen,SM Chen,Y Chen,YX Chen,J Cheng,ZK Cheng,JJ Cherwinka,MC Chu,JP Cummings,O Dalager,FS Deng,YY Ding,MV Diwan,T Dohnal,D Dolzhikov,J Dove,M Dvořák,DA Dwyer,JP Gallo,M Gonchar,GH Gong,H Gong,M Grassi,WQ Gu,JY Guo,L Guo,XH Guo,YH Guo,Z Guo,RW Hackenburg,S Hans,M He,KM Heeger,YK Heng,YK Hor,YB Hsiung,BZ Hu,JR Hu,T Hu,ZJ Hu,HX Huang,JH Huang,XT Huang,YB Huang,P Huber,David E Jaffe,KL Jen,XL Ji,XP Ji,RA Johnson,D Jones,L Kang,SH Kettell,S Kohn,M Kramer,TJ Langford,J Lee,JHC Lee,RT Lei,R Leitner,JKC Leung,F Li,HL Li,JJ Li,QJ Li,RH Li,S Li,SC Li,WD Li,XN Li,XQ Li,YF Li,ZB Li,H Liang,CJ Lin,GL Lin,S Lin,JJ Ling,JM Link,L Littenberg,BR Littlejohn,JC Liu,JL Liu,JX Liu,C Lu,HQ Lu,KB Luk,BZ Ma,XB Ma,XY Ma,YQ Ma,RC Mandujano,C Marshall,KT McDonald,RD McKeown,Y Meng,J Napolitano,D Naumov,E Naumova,TMT Nguyen,JP Ochoa-Ricoux,A Olshevskiy,H-R Pan,J Park,S Patton,JC Peng,CSJ Pun,FZ Qi,M Qi,X Qian,N Raper,J Ren,C Morales Reveco,R Rosero,B Roskovec,XC Ruan,H Steiner,JL Sun,T Tmej,K Treskov,W-H Tse,CE Tull,B Viren,V Vorobel,CH Wang,J Wang,M Wang,NY Wang,RG Wang,W Wang,X Wang,Y Wang,YF Wang,Z Wang,ZM Wang,HY Wei,LH Wei,LJ Wen,K Whisnant,CG White,HLH Wong,E Worcester

Journal

Chinese Physics C

Published Date

2021/7/1

The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision era. The positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment, in combination with the fission rates of fissile isotopes in the reactor, is used to extract the positron energy spectra resulting from the fission of specific isotopes. This information can be used to produce a precise, data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya Bay. The positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding method. Consistent results are obtained with other unfolding methods. A technique to construct a data-based prediction of the reactor antineutrino energy …

Measurement of the inclusive branching fraction for ψ (3686)→ KS0+ anything

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,Qi An,XH Bai,Yu Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc

Journal

Physics Letters B

Published Date

2021/9/10

Abstract Using 5.9 pb− 1 of e+ e− annihilation data collected at center-of-mass energies from 3.640 to 3.701 GeV with the BESIII detector at the BEPCII Collider, we measure the observed cross sections of e+ e−→ K S 0 X (where X= anything). From a fit to these observed cross sections with the sum of continuum and ψ (3686) and J/ψ Breit-Wigner functions and considering initial state radiation and the BEPCII beam energy spread, we obtain for the first time the product of ψ (3686) leptonic width and inclusive decay branching fraction Γ ψ (3686) e e B (ψ (3686)→ K S 0 X)=(373.8±6.7±20.0) eV, and assuming Γ ψ (3686) e e is (2.33±0.04) keV from PDG value, we measure B (ψ (3686)→ K S 0 X)=(16.04±0.29±0.90)%, where the first uncertainty is statistical and the second is systematic.

Direct Measurement of the Branching Fractions and , and Observation of the State in

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Antonio Amoroso,Qi An,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Jake V Bennett,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Jacek Biernat,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RB De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,Z Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,MG Kurth,W Kühn,JJ Lane

Journal

Physical review letters

Published Date

2021/8/19

We report a measurement of the observed cross sections of e+ e−→ J/ψ X based on 3.21 fb− 1 of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. In analysis of the cross sections, we measured the decay branching fractions of B (ψ (3686)→ J/ψ X)=(64.4±0.6±1.6)% and B (ψ (3770)→ J/ψ X)=(0.5±0.2±0.1)% for the first time. The energy-dependent line shape of these cross sections cannot be well described by two Breit-Wigner (BW) amplitudes of the expected decays ψ (3686)→ J/ψ X and ψ (3770)→ J/ψ X. Instead, it can be better described with one more BW amplitude of the decay R (3760)→ J/ψ X. Under this assumption, we extracted the R (3760) mass M R (3760)= 3766.2±3.8±0.4 MeV/c 2, total width Γ R (3760) tot= 22.2±5.9±1.4 MeV, and product of leptonic width and decay branching fraction Γ R (3760) e e B [R (3760)→ J/ψ X]=(79.4±85.5±11.7 …

Measurement of the absolute branching fractions for purely leptonic decays

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Physical Review D

Published Date

2021/9/21

We report new measurements of the branching fraction B (D s+→ ℓ+ ν), where ℓ+ is either μ+ or τ+(→ π+ ν τ), based on 6.32 fb− 1 of electron-positron annihilation data collected by the BESIII experiment at six center-of-mass energy points between 4.178 and 4.226 GeV. Simultaneously floating the D s+→ μ+ ν μ and D s+→ τ+ ν τ components yields B (D s+→ τ+ ν τ)=(5.21±0.25±0.17)× 10− 2, B (D s+→ μ+ ν μ)=(5.35±0.13±0.16)× 10− 3, and the ratio of decay widths R= Γ (D s+→ τ+ ν τ) Γ (D s+→ μ+ ν μ)= 9.7 3− 0.58+ 0.61±0.36, where the first uncertainties are statistical and the second systematic. No evidence of C P asymmetry is observed in the decay rates D s±→ μ±ν μ and D s±→ τ±ν τ: A C P (μ±ν)=(− 1.2±2.5±1.0)% and A C P (τ±ν)=(+ 2.9±4.8±1.0)%. Constraining our measurement to the Standard Model expectation of lepton universality (R= 9.75), we find the more precise results B (D s+→ τ+ ν τ)=(5.22±0.10±0 …

Observation of the decays χcJ → + c.c.

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Journal of high energy physics

Published Date

2021/11

By analyzing 4. 48× 10 8 ψ (3686) events collected with the BESIII detector, we observe the decays χ cJ→+ c. c.(J= 0, 1, 2) for the first time, via the radiative transition ψ (3686)→ γχ cJ. The branching fractions are determined to be (6. 65±0. 26 stat±0. 41 syst)× 10− 4,(1. 66±0. 12 stat±0. 12 syst)× 10− 4, and (3. 58±0. 16 stat±0. 23 syst)× 10− 4 for J= 0, 1, and 2, respectively.

Observation of e+ e−→ ηψ (2S) at center-of-mass energies from 4.236 to 4.600 GeV

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Journal of High Energy Physics

Published Date

2021/10

Using a total of 5. 25 fb− 1 of e+ e− collision data with center-of-mass energies from 4.236 to 4.600 GeV, we report the first observation of the process e+ e−→ ηψ (2S) with a statistical significance of 4.9 standard deviations. The data sets were collected by the BESIII detector operating at the BEPCII storage ring. We measure the yield of events integrated over center-of-mass energies and also present the energy dependence of the measured cross section.

Measurement of the D → K−π+π+π− and D → K−π+π0 coherence factors and average strong-phase differences in quantum-correlated decays

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Journal of High Energy Physics

Published Date

2021/5

The decays D→ K− π+ π+ π− and D→ K− π+ π 0 are studied in a sample of quantum-correlated pairs produced through the process e+ e−→ ψ (3770)→, exploiting a data set collected by the BESIII experiment that corresponds to an integrated luminosity of 2.93 fb− 1. Here D indicates a quantum superposition of a D 0 and a meson. By reconstructing one neutral charm meson in a signal decay, and the other in the same or a different final state, observables are measured that contain information on the coherence factors and average strong-phase differences of each of the signal modes. These parameters are critical inputs in the measurement of the angle γ of the Unitarity Triangle in B−→ DK− decays at the LHCb and Belle II experiments. The coherence factors are determined to be R K3π= and= 0. 78±0. 04, with values for the average strong-phase differences that are and …

Cross sections for the reactions , , , in the energy region between 3.773 and 4.600 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Physical Review D

Published Date

2021/12/28

Using the data samples collected in the energy range from 3.773 to 4.600 GeV with the BESIII detector at the BEPCII collider, we measure the dressed cross sections as a function of center-of-mass energy for e+ e−→ K+ K− π+ π−(π 0), K+ K− K+ K−(π 0), π+ π− π+ π−(π 0), and p p π+ π−(π 0). The cross sections for e+ e−→ K+ K− K+ K− π 0, p p π+ π−(π 0) are the first measurements. Cross sections for the other five channels are much more precise than previous results in this energy region. We also search for charmonium and charmonium-like resonances, such as the Y (4230), decaying into the same final states. We find evidence of the ψ (4040) decaying to π+ π− π+ π− π 0 with a statistical significance of 3.6 σ. Upper limits are provided for other decays since no clear signals are observed.

Measurement of branching fractions of J/ψ and ψ(3686) decays to Σ+ and −

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Journal of High Energy Physics

Published Date

2021/11

Using 1310. 6× 10 6 J/ψ and 448. 1× 10 6 ψ (3686) events collected with the BESIII detector, the branching fractions of J/ψ decays to Σ+− is measured to be (10. 61±0. 04±0. 36)× 10− 4, which is significantly more precise than the current world average. The branching fractions of ψ (3686) decays to Σ+− is measured to be (2. 52±0. 04±0. 09)× 10− 4, which is consistent with the previous measurements. In addition, the ratio of(ψ (3686)→ Σ+−)/(J/ψ→ Σ+−) is determined to be (23. 8±1. 1)% which violates the “12% rule”.

Weak phases and CP-symmetry tests in sequential decays of entangled double-strange baryons

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,J Hansson,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

arXiv preprint arXiv:2105.11155

Published Date

2021/5/24

Using a sample of events collected with the BESIII detector at the electron-positron collider BEPCII, we analyse the full , , , , decay chain. A new method, exploiting the fact that the pair is entangled and sequentially decaying, and where the complete decay chains are reconstructed, is applied for the first time. This enables precision measurements of the decay parameters for the decay (, ) as well as the decay (, ). From the decay parameters, two independent CP tests were performed, quantified by the observables and . Our results, = and , are consistent with CP symmetry. Furthermore, our method enables a separation of strong and weak decay amplitudes. This results in the first direct measurement of the weak phase difference for any baryon decay. The result is found to be rad and is one of the most precise tests of CP symmetry for strange baryons. The strong phase difference is measured to be rad. In addition, we provide an independent measurement of the recently debated decay parameter, . The asymmetry is measured to be .

Cross section measurement of and at center-of-mass energies between 3.773 GeV and 4.6 GeV

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,A Amoroso,Q An,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RB de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,MG Kurth

Journal

Physical Review D

Published Date

2021/11/22

Based on 14.7 fb− 1 of e+ e− annihilation data collected with the BESIII detector at the BEPCII collider at 17 different center-of-mass energies between 3.7730 GeV and 4.5995 GeV, Born cross sections of the two processes e+ e−→ p p η and e+ e−→ p p ω are measured for the first time. No indication of resonant production through a vector state V is observed, and upper limits on the Born cross sections of e+ e−→ V→ p p η and e+ e−→ V→ p p ω at the 90% confidence level are calculated for a large parameter space in resonance masses and widths. For the current world average parameters of the ψ (4230) of m= 4.2187 GeV/c 2 and Γ= 44 MeV, we find upper limits on resonant production of the p p η and p p ω final states of 7.5 pb and 10.4 pb at the 90% CL, respectively.

Search for the charged lepton flavor violating decay

Authors

Georges Aad,B Abbott,DC Abbott,Adam Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,Jahred Adelman,Aytul Adiguzel,S Adorni,Tim Adye,AA Affolder,Yoav Afik,Christina Agapopoulou,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,JA Aguilar-Saavedra,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Xiaocong Ai,Giulio Aielli,Iakov Aizenberg,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,AV Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,MJ Alconada Verzini,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Muhammad Alhroob,Babar Ali,Shahzad Ali,Malik Aliev,Gianluca Alimonti,Corentin Allaire,BMM Allbrooke,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,Alessandro Ambler,Luca Ambroz,Christoph Amelung,Dante Amidei,SP Amor Dos Santos,Simone Amoroso,Kieran Robert Amos,Cherifa Sabrina Amrouche,Viktor Ananiev,Christos Anastopoulos,Nansi Andari,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,DJA Antrim,Fabio Anulli,Masato Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal,V Araujo Ferraz,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Aaron James Armbruster,Alexander Armstrong,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Eleni Myrto Asimakopoulou,Lily Asquith,Jihad Assahsah,K Assamagan,Robert Astalos,Ryan Justin Atkin,M Atkinson,Naim Bora Atlay,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,Volker Andreas Austrup,Gal Avner,Giuseppe Avolio,Mohamad Kassem Ayoub,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,Christos Bakalis,OK Baker,Pepijn Johannes Bakker,Evelin Bakos,D Bakshi Gupta,Shyam Balaji,Rahul Balasubramanian

Journal

Physical Review D

Published Date

2023/8/25

A search for the charged-lepton-flavor-violating process Z→ e μ is presented, using 139 fb− 1 of s= 13 TeV p p collision data collected by the ATLAS experiment at the LHC. An excess in the e μ invariant mass spectrum near the Z boson mass would be a striking signature of new physics. No excess is observed, and an upper limit B (Z→ e μ)< 2.62× 10− 7 is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date.

Measurement of the branching fraction of leptonic decay via

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Michael Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical review D

Published Date

2021/8/13

By analyzing 6.32 fb− 1 of e+ e− annihilation data collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we determine the branching fraction of the leptonic decay D s+→ τ+ ν τ, with τ+→ π+ π 0 ν τ, to be B D s+→ τ+ ν τ=(5.29±0.25 stat±0.20 syst)%. We estimate the product of the Cabibbo-Kobayashi-Maskawa matrix element| V c s| and the D s+ decay constant f D s+ to be f D s+| V c s|=(244.8±5.8 stat±4.8 syst) MeV, using the known values of the τ+ and D s+ masses as well as the D s+ lifetime, together with our branching fraction measurement. Combining the value of| V c s| obtained from a global fit in the standard model and f D s+ from lattice quantum chromodynamics, we obtain f D s+=(251.6±5.9 stat±4.9 syst) MeV and| V c s|= 0.980±0.023 stat±0.019 syst. Using the branching fraction of B D s+→ μ+ ν μ=(5.35±0.21)× 10− 3, we obtain the ratio of the branching fractions B …

First Measurement of the Absolute Branching Fraction of

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Physical review letters

Published Date

2021/9/17

The absolute branching fraction of Λ→ p μ− ν μ is reported for the first time based on an e+ e− annihilation sample of 10× 10 9 J/ψ events collected with the BESIII detector at s= 3.097 GeV. The branching fraction is determined to be B (Λ→ p μ− ν μ)=[1.48±0.21 (stat)±0.08 (syst)]× 10− 4, which is improved by about 30% in precision over the previous indirect measurements. Combining this result with the world average of B (Λ→ p e− ν e), we obtain the ratio {[Γ (Λ→ p μ− ν μ)]/[Γ (Λ→ p e− ν e)]} to be 0.178±0.028, which agrees with the standard model prediction assuming lepton flavor universality. The asymmetry of the branching fractions of Λ→ p μ− ν μ and Λ→ p μ+ ν μ is also determined, and no evidence for C P violation is found.

Measurement of cross section for e+ e−→ Ξ0Ξ¯ 0 near threshold

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,XY Chai,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt

Journal

Physics Letters B

Published Date

2021/9/10

Using e+ e− collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector at BEPCII and corresponding to an integrated luminosity of about 500 pb− 1, we measure the cross sections and effective form factors for the process e+ e−→ Ξ 0 Ξ¯ 0 utilizing a single-tag method. A fit to the cross section of e+ e−→ Ξ 0 Ξ¯ 0 with a pQCD-driven power function is performed, from which no significant resonance or threshold enhancement is observed. In addition, the ratio of cross sections for the processes e+ e−→ Ξ− Ξ¯+ and Ξ 0 Ξ¯ 0 is calculated using recent BESIII measurement and is found to be compatible with expectation from isospin symmetry.

Measurements of the center-of-mass energies of collisions at BESIII

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Shakeel Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Husken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Chinese Physics C

Published Date

2021/10/1

During the 2016-17 and 2018-19 running periods, the BESIII experiment collected 7.5 fb

Study of the decay and observation of the -annihilation decay

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel

Journal

Physical Review D

Published Date

2021/10/22

The decay D s+→ π+ π+ π− η is observed for the first time, using e+ e− collision data corresponding to an integrated luminosity of 6.32 fb− 1, collected by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV. The absolute branching fraction for this decay is measured to be B (D s+→ π+ π+ π− η)=(3.12±0.1 3 stat±0.0 9 syst)%. The first amplitude analysis of this decay reveals the substructures in D s+→ π+ π+ π− η and determines the relative fractions and the phases among these substructures. The dominant intermediate process is D s+→ a 1 (1260)+ η, a 1 (1260)+→ ρ (770) 0 π+ with a branching fraction of (1.73±0.1 4 stat±0.0 8 syst)%. We also observe the W-annihilation process D s+→ a 0 (980)+ ρ (770) 0, a 0 (980)+→ π+ η with a branching fraction of (0.21±0.0 8 stat±0.0 5 syst)%, which is larger than the branching fractions of other measured pure W-annihilation decays by 1 order of …

Determination of the spin via the reaction

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/5/19

We report on a comparison of two possible Λ c+ spin hypotheses, J= 1 2 and 3 2, via the process e+ e−→ Λ c+ Λc−, using the angular distributions of Λ c+ decays into p K S 0, Λ π+, Σ 0 π+, and Σ+ π 0. The data were recorded at s= 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb− 1. The Λ c+ spin is determined to be J= 1 2, with this value favored over the 3 2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.

Cross section measurement of at

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Antonio Amoroso,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RB De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc

Journal

Physical Review D

Published Date

2021/11/29

The cross sections of the process e+ e−→ K S 0 K L 0 are measured at fifteen center-of-mass energies s from 2.00 to 3.08 GeV with a total integrated luminosity of 582 pb− 1 and using the BESIII detector at the Beijing Electron Positron Collider. The results are found to be consistent with those obtained by BABAR. A resonant structure around 2.2 GeV is observed, with a mass and width of 2273.7±5.7±19.3 MeV/c 2 and 86±44±51 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic. The product of its radiative width (Γ e+ e−) with its branching fraction to K S 0 K L 0 (B r K S 0 K L 0) is 0.9±0.6±0.7 eV.

Measurement of the absolute branching fractions of and decay modes

Authors

Medina Ablikim,Mikhail N Achasov,S Ahmed,Malte Albrecht,Maxim Alekseev,Antonio Amoroso,FF An,Qi An,Yu Bai,Olga Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,DW Bennett,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,E Boger,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,SA Cetin,J Chai,JF Chang,WL Chang,G Chen,HS Chen,JC Chen,ML Chen,SJ Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,HL Dai,JP Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,JZ Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,Z Haddadi,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,M Kavatsyuk,BC Ke,IK Keshk,T Khan,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,W Kühn,JS Lange,P Larin,L Lavezzi,H Leithoff,C Li,Cheng Li,DM Li,F Li

Journal

Physical Review D

Published Date

2019/2/19

We study the decays Λ c+→ Λ η π+ and Σ (1385)+ η based on Λ c+ Λc− pairs produced in e+ e− collisions at a center-of-mass energy of s= 4.6 GeV, corresponding to an integrated luminosity of 567 pb− 1. The data sample was accumulated with the BESIII detector at the BEPCII collider. The branching fractions are measured to be B (Λ c+→ Λ η π+)=(1.84±0.21 (stat)±0.15 (syst))% and B (Λ c+→ Σ (1385)+ η)=(0.91±0.18 (stat)±0.09 (syst))%, constituting the most precise measurements to date.

Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physics letters B

Published Date

2021/6/10

The electromagnetic process e+ e−→ p p¯ is studied with the initial-state-radiation technique using 7.5 fb− 1 of data collected by the BESIII experiment at seven energy points from 3.773 to 4.600 GeV. The Born cross section and the effective form factor of the proton are measured from the production threshold to 3.0 GeV/c 2 using the p p¯ invariant-mass spectrum. The ratio of electric and magnetic form factors of the proton is determined from the analysis of the proton-helicity angular distribution.

Amplitude analysis of the decay

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Alessia Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,Aurelien Bailly-Reyre,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Harris Conan Bernstein,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Michele Piero Blago,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Dana Bobulska,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,Svende Braun,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,J Cambon Bouzas,Pierluigi Campana,DH Perez,AF Quezada,Simone Capelli,Lorenzo Capriotti,R Caravaca-Mora,Angelo Carbone

Journal

arXiv preprint arXiv:2312.09115

Published Date

2023/12/14

An amplitude analysis of the decay is presented using a dataset corresponding to an integrated luminosity of fb of collision data collected with the LHCb experiment. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the Standard Model, are extracted directly from the data through a -unbinned amplitude analysis, where is the invariant mass squared. Long-distance contributions, which originate from non-factorisable QCD processes, are systematically investigated and the most accurate assessment to date of their impact on the physical observables is obtained. The pattern of measured corrections to the short-distance couplings is found to be consistent with previous analyses of - to -quark transitions, with the largest discrepancy from the Standard Model predictions found to be at the level of 1.8 standard deviations. The global significance of the observed differences in the decay is 1.4 standard deviations.

In‐plane defect engineering enabling ultra‐stable graphene paper‐based hosts for lithium metal anodes

Authors

Gang Li,Shiwei Xu,Bin Li,Maoshu Yin,Feng Shao,Hong Li,Tong Xia,Zhi Yang,Yanjie Su,Yafei Zhang,Jie Ma,Jian Yu,Nantao Hu

Journal

Chemelectrochem

Published Date

2021/9/1

Graphene papers are widely studied as stable hosts to suppress lithium dendrite growth and accommodate the volumetric expansion for lithium metal anodes. Designing and constructing flexible graphene‐based films with unique structures as stable hosts in large scales for lithium metal anodes is challenging in terms of their realistic applications. Herein, scalable three‐dimensional (3D) holey reduced graphene oxide (HrGO) films with abundant as‐tailored oxygen functional groups on hole defects of graphene nanosheets are successfully constructed as stable hosts for lithium metal anodes. The as‐designed anodes deliver a stable voltage of 11 mV for 1900 h at a current density of 0.2 mA cm−2. The achieved cycling times of the optimized Li‐HrGO‐4 film anodes are over 1000 and 800 h at current densities of 0.5 and 1.0 mA cm−2, respectively. Simultaneously, the Li‐HrGO‐4 composite film anodes also …

Observation of a near-threshold enhancement in the Lambda (Lambda) over-bar mass spectrum from e (+) e (-)-> phi Lambda (Lambda) over-bar at root S is from 3.51 to 4.60 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Husken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,MG Kurth

Journal

Physical review. D

Published Date

2021/9/15

The process e (+) e (-)-> phi Lambda (Lambda) over bar is studied using data samples collected with the BESIII detector at the BEPCII Collider at center of mass energies root S ranging from 3.51 GeV to 4.60 GeV. An enhancement is observed near the threshold of Lambda (Lambda) over bar. The lineshape of this enhancement is studied in different approaches, including fit with a Breit-Wiper function or a reversed exponential function. The Breit-Wigner function has a mass of (2262+/-4+/-28) McV/c (2) and a width of (72+/-5+/-43) MeV, where the quoted uncertainties are statistical and systematic, respectively. The rising rate of the reversed exponential function is measured as 33+/-11+/-6 MeV/c (2). For the Lambda (Lambda) over bar system, the J (PC) quantum numbers of 0 (-+) and 0 (+)(+) are rejected, while other J (PC) hypotheses are possible, according to the helicity-angle study. The energy-dependent cross section of the e (+) e (-)-> phi Lambda (Lambda) over bar process is measured for the first time in this energy region, and contributions from excited psi states and vector charmoniumlike Y-states are investigated.

Lithium titanate nanoplates embedded with graphene quantum dots as electrode materials for high-rate lithium-ion batteries

Authors

Yang Zhao,Shiwei Xu,Kexin Zhou,Tian Tian,Zhi Yang,Yanjie Su,Ying Wang,Yafei Zhang,Nantao Hu

Journal

Nanotechnology

Published Date

2021/9/29

Anode materials based on lithium titanate (LTO)/graphene composites are considered as ideal candidates for high-rate lithium-ion batteries (LIBs). Considering the blocking effects of graphene nanosheets in electrodes during ion-transfer processes, construction of LTO/graphene composite structures with enhanced electrical and ionic conductivity via facile and scalable techniques is still challenging for high-rate LIB. In this work, structures of anode materials based on LTO nanoplates embedded with graphene quantum dots (GQDs) are demonstrated for high-rate LIB. The hybrids can be facilely prepared via in situ introduction of GQDs during the process LTO preparation, which enables a uniform dispersion of GQDs within LTO. This method is convenient, rapid, and can be easily scaled-up. The introduction of 0.05 wt.% GQDs can greatly enhance the electrochemical performance of the electrodes. The electrodes …

Measurement of the Absolute Branching Fraction of via

Authors

Medina Ablikim,Mikhail N Achasov,S Ahmed,Malte Albrecht,Maxim Alekseev,Antonio Amoroso,FF An,Qi An,JZ Bai,Y Bai,O Bakina,R Baldini Ferroli,Y Ban,DW Bennett,JV Bennett,N Berger,M Bertani,D Bettoni,JM Bian,F Bianchi,E Boger,I Boyko,RA Briere,H Cai,X Cai,O Cakir,A Calcaterra,GF Cao,SA Cetin,J Chai,JF Chang,G Chen,HS Chen,JC Chen,ML Chen,PL Chen,SJ Chen,XR Chen,YB Chen,XK Chu,G Cibinetto,HL Dai,JP Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,PF Duan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,S Fegan,F Feldbauer,G Felici,CQ Feng,E Fioravanti,M Fritsch,CD Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,YT Gu,AQ Guo,RP Guo,YP Guo,Z Haddadi,S Han,XQ Hao,FA Harris,KL He,XQ He,FH Heinsius,T Held,YK Heng,T Holtmann,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,ZL Huang,T Hussain,W Ikegami Andersson,Q Ji,QP Ji,XB Ji,XL Ji,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,A Julin,N Kalantar-Nayestanaki,XL Kang,XS Kang,M Kavatsyuk,BC Ke,T Khan,A Khoukaz,P Kiese,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kornicer,M Kuemmel,M Kuessner,M Kuhlmann,A Kupsc,W Kühn,JS Lange,M Lara,P Larin,L Lavezzi,H Leithoff,C Leng,Cheng Li,Cheng Li,DM Li,F Li

Journal

Physical Review Letters

Published Date

2018/12/18

Using a data sample of e+ e− collisions corresponding to an integrated luminosity of 567 pb− 1 collected at a center-of-mass energy of s= 4.6 GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive semileptonic Λ c+ decay with a double-tag method. We obtain B (Λ c+→ X e+ ν e)=(3.95±0.34±0.09)%, where the first uncertainty is statistical and the second systematic. Using the known Λ c+ lifetime and the charge-averaged semileptonic decay width of nonstrange charmed mesons (D 0 and D+), we obtain the ratio of the inclusive semileptonic decay widths Γ (Λ c+→ X e+ ν e)/Γ (D→ X e+ ν e)= 1.26±0.12.

Search for new decay modes of the and the process

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Physical Review D

Published Date

2021/5/19

The decays ψ 2 (3823)→ γ χ c 0, 1, 2, π+ π− J/ψ, π 0 π 0 J/ψ, η J/ψ, and π 0 J/ψ are searched for using the reaction e+ e−→ π+ π− ψ 2 (3823) in a 19 fb− 1 data sample collected at center-of-mass energies between 4.1 and 4.7 GeV with the BESIII detector. The process ψ 2 (3823)→ γ χ c 1 is observed in a 9 fb− 1 data sample in the center-of-mass energy range 4.3–4.7 GeV, which confirms a previous observation but with a higher significance of 11.8 σ, and evidence for ψ 2 (3823)→ γ χ c 2 is found with a significance of 3.2 σ for the first time. The branching-fraction ratio B (ψ 2 (3823)→ γ χ c 2) B (ψ 2 (3823)→ γ χ c 1) is determined. No significant ψ 2 (3823) signals are observed for any of the other decay channels. Upper limits of branching-fraction ratios for ψ 2 (3823)→ π+ π− J/ψ, π 0 π 0 J/ψ, η J/ψ, π 0 J/ψ, γ χ c 0 relative to ψ 2 (3823)→ γ χ c 1 are reported. The process e+ e−→ π 0 π 0 ψ 2 (3823) is also searched …

Observation of the decay

Authors

M Ablikim,MN Achasov,S Ahmed,M Albrecht,M Alekseev,A Amoroso,FF An,Q An,Y Bai,O Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,J Chai,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,JC Chen,ML Chen,SJ Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,JZ Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,T Khan,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,MG Kurth,W Kühn,JS Lange,P Larin,L Lavezzi

Journal

Physical review letters

Published Date

2019/5/23

Using a total of 9.0 fb− 1 of e+ e− collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for the processes e+ e−→ γ X (3872) with X (3872)→ π 0 χ c J for J= 0, 1, 2. We report the first observation of X (3872)→ π 0 χ c 1, a new decay mode of the X (3872), with a statistical significance of more than 5 σ for all systematic fit variations. Normalizing to the previously established process e+ e−→ γ X (3872) with X (3872)→ π+ π− J/ψ, we find B (X (3872)→ π 0 χ c 1)/B (X (3872)→ π+ π− J/ψ)= 0.8 8− 0.27+ 0.33±0.10, where the first error is statistical and the second is systematic. We set 90% confidence level upper limits on the corresponding ratios for the decays to π 0 χ c 0 and π 0 χ c 2 of 19 and 1.1, respectively.

Binary nanosheet frameworks of graphene/polyaniline composite for high-areal flexible supercapacitors

Authors

Feng Shao,Yaqiong Niu,Bin Li,Gang Li,Zhi Yang,Yanjie Su,Yafei Zhang,Nantao Hu

Journal

Materials Chemistry and Physics

Published Date

2021/11/15

Graphene/polyaniline composites with a unique structure serve as a crucial class of materials for supercapacitor (SC) electrodes. In this work, we design and construct binary nanosheet frameworks of graphene/polyaniline composite for high-capacity flexible all-solid-state SCs. Novel morphological PANI nanosheets are synthesized by a self-assembly process at −20 °C without using additional template material. The as-prepared PANI nanosheets are 1–5 μm lateral dimension and 40–50 nm thickness. The PANI nanosheets exhibit excellent pseudocapacitance properties and are potential supercapacitor materials. The sacked framework based on PANI nanosheets and reduced graphene oxide (rGO) are successfully constructed, even the weight content of PANI is as high as 82%. The rGO/PANI-82% electrode in aqueous symmetric SCs presents a high specific areal capacitance (Ca) of 684 mF cm−2 at 1 mA cm …

Measurements of the branching fractions of and

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf

Journal

Physical Review D

Published Date

2021/6/9

Based on 4.481× 10 8 ψ (3686) events collected with the BESIII detector at BEPCII, the branching fraction of the isospin violating decay ψ (3686)→ Σ 0 Λ+ c. c. is measured to be (1.60±0.31±0.13±0.58)× 10− 6, where the first uncertainty is statistical, the second is systematic, and the third is the uncertainty arising from interference with the continuum. This result is significantly smaller than the measurement based on CLEO-c data sets. The decays χ c J→ Λ Λare measured via ψ (3686)→ γ χ c J, and the branching fractions are determined to be B (χ c 0→ Λ Λ)=(3.64±0.10±0.10±0.07)× 10− 4, B (χ c 1→ Λ Λ)=(1.31±0.06±0.06±0.03)× 10− 4, B (χ c 2→ Λ Λ)=(1.91±0.08±0.17±0.04)× 10− 4, where the third uncertainties are systematic due to the ψ (3686)→ γ χ c J branching fractions.

Study of the decay in

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,H Cai,X Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/7/16

Based on an e+ e− collision data sample corresponding to an integrated luminosity of 2.93 fb− 1 collected with the BESIII detector at s= 3.773 GeV, the first amplitude analysis of the singly Cabibbo-suppressed decay D+→ K+ K S 0 π 0 is performed. From the amplitude analysis, the K*(892)+ K S 0 component is found to be dominant with a fraction of (57.1±2.6±4.2)%, where the first uncertainty is statistical and the second systematic. In combination with the absolute branching fraction B (D+→ K+ K S 0 π 0) measured by BESIII, we obtain B (D+→ K*(892)+ K S 0)=(8.69±0.40±0.64±0.51)× 10− 3, where the third uncertainty is due to the branching fraction B (D+→ K+ K S 0 π 0). The precision of this result is significantly improved compared to the previous measurement. This result also differs from most of theoretical predictions by about 4 σ, which may help to improve the understanding of the dynamics behind.

Measurements of Born cross sections of

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/8/27

The Born cross sections are measured for the first time for the processes e+ e−→ D s*+ D s 0*(2317)−+ c. c. and e+ e−→ D s*+ D s 1 (2460)−+ c. c. at the center-of-mass energy s= 4.600 GeV, 4.612 GeV, 4.626 GeV, 4.640 GeV, 4.660 GeV, 4.68 GeV, and 4.700 GeV, and for e+ e−→ D s*+ D s 1 (2536)−+ c. c. at s= 4.660 GeV, 4.680 GeV, and 4.700 GeV, using data samples collected with the BESIII detector at the BEPCII collider. No structures are observed in cross-section distributions for any of the processes.

Determination of the absolute branching fractions of and

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/9/15

Using 2.93 fb− 1 of e+ e− collision data collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we measure the absolute branching fractions of the decays D 0→ K− e+ ν e and D+→ K 0 e+ ν e to be (3.567±0.03 1 stat±0.02 5 syst)% and (8.68±0.1 4 stat±0.1 6 syst)%, respectively. Starting with the process e+ e−→ D D, a new reconstruction method is employed to select events that contain candidates for both D→ Ke+ ν e and D→ K e− ν e decays. The branching fractions reported in this work are consistent within uncertainties with previous BESIII measurements that selected events containing D→ Ke+ ν e and hadronic Ddecays. Combining our results with the lifetimes of the D 0 and D+ mesons and the previous BESIII measurements leads to a ratio of the two decay partial widths of Γ D 0→ K− e+ ν e Γ D+→ K 0 e+ ν e= 1.039±0.021. This ratio supports isospin symmetry in the D 0→ K− e+ ν e and D …

Cross section measurement of from to 4.6984 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/9/28

Using data samples with a total integrated luminosity of 20.1 fb− 1 collected by the BESIII detector operating at the BEPCII collider, the cross section of the process e+ e−→ π+ π− ψ (3686) is measured at center-of-mass energies between 4.0076 and 4.6984 GeV. The measured cross section is consistent with previous results, and with much improved precision. A fit to the measured energy-dependent cross section, which includes three Breit-Wigner functions and a nonresonant contribution, confirms the existence of the charmonium-like states Y (4220), Y (4390), and Y (4660). This is the first observation of the Y (4660) at the BESIII experiment.

Search for the hyperon semileptonic decay

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Shakeel Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Physical Review D

Published Date

2021/10/14

Using (10.087±0.044)× 10 9 J/ψ events collected by the Beijing Spectrum III (BESIII) detector at the Beijing Electron Positron Collider II (BEPCII) collider, we search for the hyperon semileptonic decay Ξ−→ Ξ 0 e− ν e. No significant signal is observed and the upper limit on the branching fraction B (Ξ−→ Ξ 0 e− ν e) is set to be 2.59× 10− 4 at 90% confidence level. This result is one order of magnitude more strict than the previous best limit.

Measurement of the branching fraction of and search for a -violating asymmetry in at BESIII

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Antonio Amoroso,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,SX Du,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,XL Gao,Y Gao,YG Gao,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,TT Han,TZ Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,T Held,YK Heng,M Himmelreich,T Holtmann,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,MG Kurth

Journal

Physical Review D

Published Date

2021/5/19

The rare decay η′→ π+ π− e+ e− is studied using a sample of 1.3× 10 9 J/ψ events collected with the BESIII detector at BEPCII in 2009 and 2012. The branching fraction is measured with improved precision to be (2.42±0.0 5 stat±0.0 8 syst)× 10− 3. Due to the inclusion of new data, this result supersedes the last BESIII result on this branching fraction. In addition, the C P-violating asymmetry in the angle between the decay planes of the π+ π−-pair and the e+ e−-pair is investigated. A measurable value would indicate physics beyond the standard model; the result is A C P=(2.9±3. 7 stat±1. 1 syst)%, which is consistent with the standard model expectation of no C P-violation. The precision is comparable to the asymmetry measurement in the K L 0→ π+ π− e+ e− decay where the observed (14±2)% effect is driven by a standard model mechanism.

Measurement of the branching fraction for

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,V Batozskaya,D Becker,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,C Chen,G Chen,HS Chen,ML Chen,SJ Chen,T Chen,XR Chen,XT Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,JJ Cui,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,P Egorov,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,YN Gao,Yang Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,MH Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,YT Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,SS Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke

Journal

Physical Review D

Published Date

2021/11/11

Analyzing (448.1±2.9)× 10 6 ψ (3686) events collected with the BESIII detector at the BEPCII collider, the ψ (3686)→ ω K S 0 K S 0 decay is observed for the first time. The branching fraction for this decay is determined to be B ψ (3686)→ ω K S 0 K S 0=(7.04±0.39±0.36)× 10− 5, where the first uncertainty is statistical and the second is systematic.

Measurement of the cross section for and evidence of the decay

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,MR An,Q An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu

Journal

Physical Review D

Published Date

2021/11/29

The Born cross section of the process e+ e−→ Λ Λis measured at 33 center-of-mass energies between 3.51 and 4.60 GeV using data corresponding to the total integrated luminosity of 20.0 fb− 1 collected with the BESIII detector at the BEPCII collider. Describing the energy dependence of the cross section requires a contribution from the ψ (3770)→ Λ Λdecay, which is fitted with a significance of 4.6− 4.9 σ including the systematic uncertainty. The lower bound on its branching fraction is 2.4× 10− 6 at the 90% confidence level (CL), at least an order of magnitude larger than expected from predictions using a scaling based on observed electronic widths. This result indicates the importance of effects from vector charmonium (like) states when interpreting data in terms of eg, electromagnetic structure observables. The data do not allow for definite conclusions on the interplay with other vector charmonium (like) states, and …

Binder-free, flexible, and self-standing non-woven fabric anodes based on graphene/Si hybrid fibers for high-performance Li-ion batteries

Authors

Feng Shao,Hong Li,Lu Yao,Shiwei Xu,Gang Li,Bin Li,Cheng Zou,Zhi Yang,Yanjie Su,Nantao Hu,Yafei Zhang

Journal

ACS Applied Materials & Interfaces

Published Date

2021/6/3

High-capacity silicon (Si) is recognized as a potential anode material for high-performance lithium-ion batteries (LIBs). Unfortunately, large volume expansion during discharge/charge processes hinders its areal capacity. In this work, we design a flexible graphene-fiber-fabric (GFF)-based three-dimensional conductive network to form a binder-free and self-standing Si anode for high-performance LIBs. The Si particles are strongly wrapped in graphene fibers. The substantial void spaces caused by the wrinkled graphene in fibers enable effective accommodation of the volume change of Si during lithiation/delithiation processes. The GFF/Si-37.5% electrode exhibits an excellent cyclability with a specific capacity of 920 mA h g–1 at a current density of 0.4 mA cm–2 after 100 cycles. Furthermore, the GFF/Si-29.1% electrode exhibits an excellent reversible capacity of 580 mA h g–1 at a current density of 0.4 mA cm–2 …

Study of and search for

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Jacek Biernat,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt

Journal

Physical Review D

Published Date

2021/7/6

Using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.178 to 4.600 GeV, we study the process e+ e−→ π 0 X (3872) γ and search for Z c (4020) 0→ X (3872) γ. We find no significant signal and set upper limits on σ (e+ e−→ π 0 X (3872) γ)· B (X (3872)→ π+ π− J/ψ) and σ (e+ e−→ π 0 Z c (4020) 0)· B (Z c (4020) 0→ X (3872) γ)· B (X (3872)→ π+ π− J/ψ) for each energy point at 90% confidence level, which is of the order of several tenths pb.

Study of the process at center-of-mass energies between 2.00 and 3.08 GeV

Authors

Medina Ablikim,Mikhail N Achasov,Patrik Adlarson,Samer Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Yu Bai,Olga Bakina,R Baldini Ferroli,Ilaria Balossino,Yong Ban,Khurelbaatar Begzsuren,Niklaus Berger,Monica Bertani,Diego Bettoni,Fabrizio Bianchi,Johannes Bloms,Alberto Bortone,I Boyko,Roy A Briere,Hao Cai,Xiao Cai,Alessandro Calcaterra,GF Cao,N Cao,Serkant Ali Çetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,XL Gao,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,N Hüsken,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Qingping Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/8/20

The process e+ e−→ ϕ η is studied at 22 center-of-mass energy points (s) between 2.00 and 3.08 GeV using 715 pb− 1 of data collected with the BESIII detector. The measured Born cross section of e+ e−→ ϕ η is found to be consistent with BABAR measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9 σ with mass (2163.5±6.2±3.0) MeV/c 2 and width (31.1− 11.6+ 21.1±1.1) MeV, where the first uncertainties are statistical and the second are systematic.

Observation of

Authors

M Ablikim,MN Achasov,P Adlarson,S Ahmed,M Albrecht,M Alekseev,A Amoroso,FF An,Q An,Y Bai,O Bakina,R Baldini Ferroli,Y Ban,K Begzsuren,JV Bennett,N Berger,M Bertani,D Bettoni,F Bianchi,J Biernat,J Bloms,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,J Chai,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,JC Chen,ML Chen,SJ Chen,YB Chen,W Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,JP Dai,XC Dai,A Dbeyssi,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,ZL Dou,SX Du,JZ Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,M Fritsch,CD Fu,Y Fu,Q Gao,XL Gao,Y Gao,YG Gao,Z Gao,B Garillon,I Garzia,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,S Han,XQ Hao,FA Harris,KL He,FH Heinsius,T Held,YK Heng,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,JS Huang,XT Huang,XZ Huang,ZL Huang,N Huesken,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,Q Ji,QP Ji,XB Ji,XL Ji,HL Jiang,XS Jiang,XY Jiang,JB Jiao,Z Jiao,DP Jin,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,T Khan,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch,OB Kolcu,B Kopf,M Kuemmel,M Kuessner,A Kupsc,M Kurth,MG Kurth

Journal

Physical Review D

Published Date

2019/6/27

Using a data sample of 4.48× 10 8 ψ (3686) events collected with the BESIII detector, we present a first observation of ψ (3686)→ p p ϕ, and we measure its branching fraction to be [6.06±0.38 (stat)±0.48 (syst)]× 10− 6. In contrast to the earlier discovery of a threshold enhancement in the p p-mass spectrum of the channel J/ψ→ γ p p, denoted as X (p p), we do not find a similar enhancement in ψ (3686)→ p p ϕ. An upper limit of 1.82× 10− 7 at the 90% confidence level on the branching fraction of ψ (3686)→ X (p p) ϕ→ p p ϕ is obtained.

Free-standing films based on Ni wires core/foamed NiO shell as hosts for stable lithium anodes

Authors

Gang Li,Shiwei Xu,Bin Li,Tong Xia,Jian Yu,Feng Shao,Zhi Yang,Yanjie Su,Yafei Zhang,Jie Ma,Nantao Hu

Journal

Journal of Power Sources

Published Date

2021/9/15

Due to the stable three-dimensional (3D) conductive skeleton and superior lithiophilic surface, lithiophilic 3D conductive network structures are considered as excellent hosts for lithium metal batteries. How to efficiently construct unique lithiophilic 3D conductive structures as stable hosts for lithium metal anodes remains a challenge in the realistic applications. Herein, three-dimensional free-standing films based on Ni wires core/foamed NiO shell (Ni@NiO) are successfully fabricated as stable hosts for lithium metal anodes. The as-designed unique structures can effectively alleviate the large volume expansion and suppress lithium dendritic growth during the charge/discharge reaction, which can improve the service life of lithium metal batteries. The symmetric batteries of as-prepared Li-Ni@NiO-400 anodes deliver superior electrochemical performance, retaining a flat and stable voltage profiles with 13 mV for 2020 …

Measurement of the doubly Cabibbo-suppressed decay with semileptonic tags

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,S Ahmed,Malte Albrecht,Riccardo Aliberti,Antonio Amoroso,MR An,Qi An,XH Bai,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,RA Briere,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,DY Chen,G Chen,HS Chen,ML Chen,SJ Chen,XR Chen,YB Chen,ZJ Chen,WS Cheng,G Cibinetto,F Cossio,XF Cui,HL Dai,XC Dai,A Dbeyssi,RE De Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,C Dong,J Dong,LY Dong,MY Dong,X Dong,SX Du,YL Fan,J Fang,SS Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,M Fritsch,CD Fu,Y Gao,YG Gao,I Garzia,PT Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,M Greco,LM Gu,MH Gu,S Gu,YT Gu,CY Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,N Hüsken,KL He,FH Heinsius,CH Heinz,T Held,YK Heng,C Herold,M Himmelreich,T Holtmann,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,LQ Huang,XT Huang,YP Huang,Z Huang,T Hussain,W Ikegami Andersson,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,QP Ji,XB Ji,XL Ji,YY Ji,HB Jiang,XS Jiang,JB Jiao,Z Jiao,S Jin,Y Jin,MQ Jing,T Johansson,N Kalantar-Nayestanaki,XS Kang,R Kappert,M Kavatsyuk,BC Ke,IK Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,L Koch

Journal

Physical Review D

Published Date

2021/10/12

We propose a new semileptonic tag method to study the doubly Cabibbo-suppressed D decay in ψ (3770)→ D Dreaction. Utilizing the dataset corresponding to an integrated luminosity of 2.93 fb− 1 at a center-of-mass energy of 3.773 GeV collected by the BESIII detector, we determine the branching fraction for D+→ K+ π+ π− π 0 to be (1.03±0.1 2 stat±0.0 6 syst)× 10− 3, in which the contributions from narrow intermediate resonances, D+→ K+ η, D+→ K+ ω, and D+→ K+ ϕ have been excluded. Combining the world average of the branching fraction of D+→ K− π+ π+ π 0, we determine B (D+→ K+ π+ π− π 0)/B (D+→ K− π+ π+ π 0)=(1.65±0.21)%, corresponding to (5.73±0.73) tan 4 θ c, where θ c is the Cabibbo mixing angle. These results are consistent with our previous measurement with hadronic tags but are significantly larger than other doubly Cabibbo-suppressed decays in the charm sector.

Search for electron-antineutrinos associated with gravitational-wave events GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817 at Daya Bay

Authors

FP An,AB Balantekin,HR Band,M Bishai,S Blyth,GF Cao,J Cao,JF Chang,Y Chang,HS Chen,SM Chen,Y Chen,YX Chen,J Cheng,ZK Cheng,JJ Cherwinka,MC Chu,JP Cummings,O Dalager,FS Deng,YY Ding,MV Diwan,T Dohnal,J Dove,M Dvořák,DA Dwyer,JP Gallo,M Gonchar,GH Gong,H Gong,WQ Gu,JY Guo,L Guo,XH Guo,YH Guo,Z Guo,RW Hackenburg,S Hans,M He,KM Heeger,YK Heng,A Higuera,YK Hor,YB Hsiung,BZ Hu,JR Hu,T Hu,ZJ Hu,HX Huang,XT Huang,YB Huang,P Huber,DE Jaffe,KL Jen,XL Ji,XP Ji,RA Johnson,D Jones,L Kang,SH Kettell,S Kohn,M Kramer,TJ Langford,J Lee,JHC Lee,RT Lei,R Leitner,JKC Leung,F Li,JJ Li,QJ Li,S Li,SC Li,WD Li,XN Li,XQ Li,YF Li,ZB Li,H Liang,CJ Lin,GL Lin,S Lin,JJ Ling,JM Link,L Littenberg,BR Littlejohn,JC Liu,JL Liu,C Lu,HQ Lu,JS Lu,KB Luk,XB Ma,XY Ma,YQ Ma,C Marshall,DA Martinez Caicedo,KT McDonald,RD McKeown,Y Meng,J Napolitano,D Naumov,E Naumova,JP Ochoa-Ricoux,A Olshevskiy,H-R Pan,J Park,S Patton,JC Peng,CSJ Pun,FZ Qi,M Qi,X Qian,N Raper,J Ren,C Morales Reveco,R Rosero,B Roskovec,XC Ruan,H Steiner,JL Sun,T Tmej,K Treskov,W-H Tse,CE Tull,B Viren,V Vorobel,CH Wang,J Wang,M Wang,NY Wang,RG Wang,W Wang,X Wang,Y Wang,YF Wang,Z Wang,ZM Wang,HY Wei,LH Wei,LJ Wen,K Whisnant,CG White,HLH Wong,E Worcester,DR Wu,FL Wu,Q Wu,WJ Wu,DM Xia

Journal

Chinese Physics C

Published Date

2021/5/1

The establishment of a possible connection between neutrino emission and gravitational-wave (GW) bursts is important to our understanding of the physical processes that occur when black holes or neutron stars merge. In the Daya Bay experiment, using the data collected from December 2011 to August 2017, a search was performed for electron-antineutrino signals that coincided with detected GW events, including GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817. We used three time windows of±10,±500, and±1000 s relative to the occurrence of the GW events and a neutrino energy range of 1.8 to 100 MeV to search for correlated neutrino candidates. The detected electron-antineutrino candidates were consistent with the expected background rates for all the three time windows. Assuming monochromatic spectra, we found upper limits (90% confidence level) of the …

See List of Professors in Yafei Zhang University(Shanghai Jiao Tong University)

Yafei Zhang FAQs

What is Yafei Zhang's h-index at Shanghai Jiao Tong University?

The h-index of Yafei Zhang has been 104 since 2020 and 170 in total.

What are Yafei Zhang's top articles?

The articles with the titles of

Observation of decays to and

Molecular-level uniform graphene/polyaniline composite film for flexible supercapacitors with high-areal capacitance

Gas sensing performance and charge-transfer mechanism of semiconducting single-walled carbon nanotubes

Amplitude analysis and branching fraction measurement of the decay D+ → π+π0π0

External condition-induced interfacial charge transfer in single-walled carbon nanotube/graphene van der Waals heterostructures

Measurement of cross sections at center-of-mass energies from 2.00 to 3.08 GeV

High-Performance Broadband Photodetectors Based on Asymmetric All-Carbon Nano-Heterostructures

A novel BiVO4/DLC heterojunction for efficient photoelectrochemical water splitting

...

are the top articles of Yafei Zhang at Shanghai Jiao Tong University.

What is Yafei Zhang's total number of citations?

Yafei Zhang has 118,562 citations in total.

What are the co-authors of Yafei Zhang?

The co-authors of Yafei Zhang are C.S. Lee, Dapeng YU, Yanjie Su, Zhihua Zhou, Zichao Ye.

    Co-Authors

    H-index: 139
    C.S. Lee

    C.S. Lee

    City University of Hong Kong

    H-index: 113
    Dapeng YU

    Dapeng YU

    Peking University

    H-index: 55
    Yanjie Su

    Yanjie Su

    Shanghai Jiao Tong University

    H-index: 36
    Zhihua Zhou

    Zhihua Zhou

    Shanghai Jiao Tong University

    H-index: 6
    Zichao Ye

    Zichao Ye

    University of Illinois at Urbana-Champaign

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