版权说明 操作指南
首页 > 成果 > 详情

Measurement of B(J/psi -> eta ' e(+)e(-)) and search for a dark photon

认领
导出
下载 Link by DOI
反馈
分享
QQ微信 微博
成果类型:
期刊论文
作者:
Ablikim, M.;Achasov, M. N.;Ahmed, S.;Albrecht, M.;Alekseev, M.;...
通讯作者:
Li, F. Y.
作者机构:
[Yu, B. X.; Hu, T.; Sun, Z. J.; Guo, R. P.; Ning, Z.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Min, J.; Zhao, Ling; Zhu, Z. A.; Xu, G. F.; Wang, K.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Zhou, Q.; Li, H. J.; Wang, Y. F.; Wang, L. L.; Jin, D. P.; Xiu, Q. L.; Lu, Y.; Ouyang, Q.; Kurth, M.; Ji, X. B.; Qian, S.; Wang, P.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Wang, Zongyuan; Liu, Z. A.; Ke, B. C.; Sun, S. S.; Fu, C. D.; Lou, X. C.; Wang, Z. G.; Zhang, B. X.; Sun, X. H.; Cao, G. F.; Xiao, Y. J.; Xu, J. J.; Wu, L. H.; Zhao, Y. B.; Gao, Q.; Zheng, J. P.; Zhang, B. Y.; Jiang, X. S.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhao, G.; Wu, L. J.; Yang, Yifan; Yuan, Y.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhu, A. N.; Li, H. B.; Zhuang, J.; Li, J. C.; Guo, A. Q.; Zhang, Yang; Liao, L. Z.; Zhang, J. Y.; Wang, L. S.; Yin, J. H.; Jin, S.; Liu, Huanhuan; Zhang, J. Z.; He, K. L.; Chen, G.; Xiong, X. A.; Chen, J. C.; Ablikim, M.; Liu, C. X.; Zhu, K.; Bai, J. Z.; Zhao, J. Z.; Mao, Z. P.; Zhao, Q.; Lu, J. G.; Chen, Y. B.; Niu, S. L.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Zhang, C. C.; Zhang, D. H.; Yuan, C. Z.; Tang, G. Y.; Zhang, H. Y.; Chen, M. L.; Ma, T.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Ma, H. L.; Ye, M.; Xie, Y. G.; Sheng, H. Y.; Song, X. Y.; Zou, B. S.; Chen, H. S.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Zhao, T. C.; Cai, X.; Xu, L.; Zhang, Y. H.; Zhu, S.; An, F. F.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Niu, X. Y.; Mo, X. H.; Zhou, L.; Fang, J.; Shen, X. Y.; Zhu, Y. S.; Li, X. N.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Wang, P. L.; Zhang, J.; Duan, P. F.; Hu, Y.; Wang, B.; Wang, Meng; Li, F.; Zhang, K.; Zhou, X. Y.; Tang, X.; Yang, H. X.; Qin, Z. H.; Xiao, D.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhao, J. W.; Dai, H. L.; Li, W. D.] Inst High Energy Phys, Beijing 100049, Peoples R China.
[Yan, W. C.; Qi, H. R.; Shen, C. P.; Qi, T. Y.] Beihang Univ, Beijing 100191, Peoples R China.
[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.
[Fritsch, M.; Heinsius, F. H.; Zhang, J. Q.; Weber, T.; Mustafa, A.; Kuessner, M.; Pitka, A.; Richter, M.; Pelizaeus, M.; Kopf, B.; Qin, X. S.; Albrecht, M.; Holtmann, T.; Sowa, C.; Schnier, C.; Feldbauer, F.; Wiedner, U.; Kuemmel, M.; Held, T.] Bochum Ruhr Univ, D-44780 Bochum, Germany.
[Briere, R. A.; Bennett, J. V.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Li, F. Y.] P
Peking Univ, Beijing 100871, Peoples R China.
语种:
英文
期刊:
PHYSICAL REVIEW D
ISSN:
2470-0010
年:
2019
卷:
99
期:
1
基金类别:
National Key Basic Research Program of ChinaNational Basic Research Program of China [2015CB85670]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program: the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Fund of the NSFC [U1232105, U1332201, U1532257, U1532258]; Joint Large-Scale Scientific Facility Fund of the CAS [U1232105, U1332201, U1532257, U1532258]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CASChinese Academy of Sciences; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFGGerman Research Foundation (DFG) [CRC 1044, FOR 2359]; Instituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of TurkeyTurkiye Cumhuriyeti Kalkinma Bakanligi [DPT2006K-120470]; National Science and Technology fund; U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [11235011, 11335008, 11425524, 11625523, 11635010]; Swedish Research CouncilSwedish Research Council; National 1000 Talents Program of China; INPAC
机构署名:
本校为其他机构
摘要:
Using a data sample of (1310.6±7.0)×106 J/ψ decay events collected with the BESIII detector at BEPCII, we study the electromagnetic Dalitz decay J/ψ→η′e+e- with two dominant η′ decay modes, η′→γπ+π- and η′→π+π-η. The branching fraction is determined to be B(J/ψ→η′e+e-)=(6.59±0.07±0.17)×10-5, which improves in precision by a factor of 2 over the previous BESIII measurement. A search for the dark photon (γ′) is performed via J/ψ→η′γ′, γ′→e+e-. Excluding the ω and φ mass regions, no significant signal is ob...

反馈

验证码:
看不清楚,换一个
确定
取消

成果认领

标题:
用户 作者 通讯作者
请选择
请选择
确定
取消

提示

该栏目需要登录且有访问权限才可以访问

如果您有访问权限,请直接 登录访问

如果您没有访问权限,请联系管理员申请开通

管理员联系邮箱:yun@hnwdkj.com