中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Search for eta and eta ' -> pi(+)e(-)(v)over-bar(e) + c.c. decays in J/psi -> phi eta and phi eta '

文献类型:期刊论文

作者BESIII Callaboration
刊名PHYSICAL REVIEW D
出版日期2013
卷号87期号:3
关键词WEAK-INTERACTION STANDARD MODEL DECAYS MESON GEV/C
通讯作者Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要Using a sample of 225.3 million J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider in 2009, searches for the decays of eta and eta' -> pi(+)e(-)(v) over bar (e) + c.c. in J/psi -> phi eta and phi eta' are performed. The phi signals, which are reconstructed in K+K- final states, are used to tag eta and eta' semileptonic decays. No signals are observed for either eta or eta', and upper limits at the 90% confidence level are determined to be 7.3 x 10(-4) and 5.0 x 10(-4) for the ratios B(eta ->pi(+)e(-)(v) over bar (e) + c.c)/B(eta ->pi(+)pi(-)pi(0)) and B(eta'->pi(+)e(-)(v) over bar (e) + c.c)/B(eta'->pi(+)pi(-)eta) respectively. These are the first upper- limit values determined for eta and eta' semileptonic weak decays. DOI: 10.1103/PhysRevD.87.032006
学科主题Astronomy & Astrophysics; Physics
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000314994300002
公开日期2016-02-26
源URL[http://ir.ihep.ac.cn/handle/311005/213459]  
专题高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
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BESIII Callaboration. Search for eta and eta ' -> pi(+)e(-)(v)over-bar(e) + c.c. decays in J/psi -> phi eta and phi eta '[J]. PHYSICAL REVIEW D,2013,87(3).
APA BESIII Callaboration.(2013).Search for eta and eta ' -> pi(+)e(-)(v)over-bar(e) + c.c. decays in J/psi -> phi eta and phi eta '.PHYSICAL REVIEW D,87(3).
MLA BESIII Callaboration."Search for eta and eta ' -> pi(+)e(-)(v)over-bar(e) + c.c. decays in J/psi -> phi eta and phi eta '".PHYSICAL REVIEW D 87.3(2013).

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来源:高能物理研究所

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