标题:Measurements of absolute branching fractions for Lambda(+)(c) -> Xi K-0(+) and Xi(1530)K-0(+)
作者:Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bai, Y.; Bakina, O 更多
作者机构:[Ablikim, M.; 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, Y. B.; Dai, H. L.; Deng 更多
通讯作者:Li, PR;Li, PR;Li, PR
通讯作者地址:[Li, PR]China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China;[Li, PR]Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China;[Li, PR]Univ Chinese 更多
来源:PHYSICS LETTERS B
出版年:2018
卷:783
页码:200-206
DOI:10.1016/j.physletb.2018.06.046
关键词:Lambda(+)(c); W-exchange; Absolute branching fraction; BESIII
摘要:We report the first measurements of absolute branching fractions for the W-exchange-only processes Lambda(+)(c) -> Xi K-0(+) and Lambda(+)(c)-> Xi(1530)K-0(+) with the double-tag technique, by analyzing an e(+)e(-) collision data sample, that corresponds to an integrated luminosity of 567 pb(-1) collected at a center-of-mass energy of 4.6 GeV by the BESIII detector. The branching fractions are measured to be B(Lambda(+)(c)-> Xi K-0(+)) = (5.90 +/- 0.86 +/- 0.39) x 10(-3) and B(Lambda(+)(c)-> Xi(1530)K-0(+)) = (5.02 +/- 0.99 +/- 0.31) x 10(-3), where the first uncertainties are statistical and the second systematic. Our results are more precise than the previous relative measurements. (c) 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
收录类别:SCIE
资源类型:期刊论文
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