标题:Improved measurement of the absolute branching fraction of D+ -> (K)over-bar(0)mu(+)nu(mu)
作者:Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amorosoa, A.; An, F. F.; An, Q.; Bai, J. Z.; F 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:Ablikim, M
通讯作者地址:[Ablikim, M]Inst High Energy Phys, Beijing 100049, Peoples R China.
来源:EUROPEAN PHYSICAL JOURNAL C
出版年:2016
卷:76
期:7
DOI:10.1140/epjc/s10052-016-4198-2
摘要:By analyzing 2.93 fb(-1) of data collected at root s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction B(D+ -> (K) over bar (0) (+)(mu)nu(mu)) = (8.72 +/- 0.07(stat). +/- 0.18(sys).) %, which is consistent with previous measurements within uncertainties but with significantly improved precision. Combining the Particle Data Group values of B(D-0 -> K- mu(+)nu(mu)), B(D+-> (K) over bar (0)e(+)nu(e)), and the lifetimes of the D-0 and D+ mesons with the value of B(D+ -> (K) over bar (0)mu(+)nu(mu)) measured in this work, we determine the following ratios of partial widths: Gamma (D-0 -> (K) over bar (-)mu(+)nu(mu))/Gamma (D+ -> (K) over bar (0)mu+nu(mu)) = 0.963 +/- 0.044 and Gamma (D+ -> (K) over bar (0) mu+nu(mu))/Gamma(D+ -> (K) over bar (0)e+nu(e)) = 0.988 +/- 0.033.
收录类别:SCIE
WOS核心被引频次:2
资源类型:期刊论文
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