Study of the rare decay J/ψ→e^+e^-φ
Study of the rare decay J/ψ→e^+e^-φ作者机构:School of Physics Nankai University Institute of High Energy Physics and Theoretical Physics Center for Science FacilitiesChinese Academy of Sciences Department of Physics Tianjin University
出 版 物:《Chinese Physics C》 (中国物理C(英文版))
年 卷 期:2016年第40卷第7期
页 面:28-31页
核心收录:
学科分类:0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 070202[理学-粒子物理与原子核物理] 0704[理学-天文学] 0702[理学-物理学] 0713[理学-生态学]
基 金:Supported by National Natural Science Foundation of China(11375128,11425525) Sino-German CRC 110 Symmetries and the Emergence of Structure in QCD(11261130311)
主 题:rare decay J/ψ looptools
摘 要:We study the decay process of J/ψ→ e+e-φ where the relatively clean electromagnetic (EM) transitions appear at leading order at tree level while the hadronic contributions only emerge via hadronic loop transitions. We include the low-lying scalar f0(980) and pseudoscalar η/η′ as the dominant contributions in the evaluation of the hadronic loop contributions. It is found that the hadronic effects are negligible compared with the EM contributions. The decay width of J/ψ→ e+e-φis determined to be about 2.12 × 10^-6 keV if there is no other leading mechanism contributing. This result will be tested by the BESIII experiment with a large J/ψ data sample.