标题:Observation of ηc decay into Σ+Σ ̄- and Ξ-Ξ̄ + final states
作者:Ablikim M.; Achasov M.N.; Albayrak O.; Ambrose D.J.; An F.F.; An Q.; Bai J.Z.; Ban Y.;等 更多
作者机构:[Ablikim, M] Institute of High Energy Physics, Beijing 100049, China;[ Achasov, M.N] G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibir 更多
通讯作者地址:[Ablikim, M] Institute of High Energy Physics, Beijing 100049, China
来源:Physical Review D - Particles, Fields, Gravitation and Cosmology
出版年:2013
卷:87
期:1
DOI:10.1103/PhysRevD.87.012003
摘要:Using a data sample of 2.25×108 J/ψ events collected with the BESIII detector, we present the first observation of the decays of ηc mesons to Σ+Σ̄ - and Ξ-Ξ̄+. The branching fractions are measured to be (2.11±0.28stat± 0.18syst±0.50PDG)×10-3 and (0.89±0.16stat±0.08syst±0.21 PDG)×10-3 for ηc→Σ +Σ̄- and Ξ-Ξ ̄+, respectively. These branching fractions provide important information on the helicity selection rule in charmonium-decay processes. © 2013 American Physical Society.
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871851410&doi=10.1103%2fPhysRevD.87.012003&partnerID=40&md5=dc002f3ecf4a75209436fee239d4d984
TOP