标题:Measurement of the branching fraction for psi(3770) -> gamma chi c0
作者:Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Fe 更多
作者机构:[Ablikim, M.; Ai, X. C.; An, F. F.; Bai, J. Z.; Cai, X.; Cao, G. F.; Chang, J. F.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, X.; Chen, Y. 更多
通讯作者:Ma, HL
通讯作者地址:[Ma, HL]Inst High Energy Phys, Beijing 100049, Peoples R China.
来源:PHYSICS LETTERS B
出版年:2016
卷:753
页码:103-109
DOI:10.1016/j.physletb.2015.11.074
摘要:By analyzing a data set of 2.92 fb(-1) of e(+) e(-) collision data taken at root s = 3.773 GeVand 106.41 x 10(6) psi(3686) decays taken at root s = 3.686 GeVwith the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for psi(3770)->gamma chi c0 to be B(psi(3770)->gamma chi c0) = (6.88 +/- 0.28 +/- 0.67) x 10(-3) and Gamma[psi(3770)->gamma chi c0] = (187 +/- 8 +/- 19) keV, respectively. These are the most precise measurements to date. (C) 2015 The Authors. Published by Elsevier B.V.
收录类别:SCIE
WOS核心被引频次:3
资源类型:期刊论文
TOP