中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Observation of B--/+->rho(-/+)rho(0) decays

文献类型:期刊论文

作者Belle Collaboration
刊名PHYSICAL REVIEW LETTERS
出版日期2003
卷号91期号:22
关键词DIRECT CP VIOLATION B-MESON DECAYS
通讯作者Zhang, J (reprint author), Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
英文摘要We report the first observation of the charmless vector-vector decay process B-/+-->rho(-/+)rho(0). The measurement uses a 78 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider operating at the Y(4S) resonance. We obtain a branching fraction of B(B-/+-->rho(-/+)rho(0))=[31.7+/-7.1(stat)(-6.7)(+3.8)(syst)]x10(-6). An analysis of the rho helicity-angle distributions gives a longitudinal polarization fraction of Gamma(L)/Gamma=0.95+/-0.11(stat)+/-0.02(syst). We also measure the direct-CP-violating asymmetry A(CP)(B-/+-->rho(-/+)rho(0))=0.00+/-0.22(stat)+/-0.03(syst).
学科主题Physics
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000186801900006
公开日期2016-02-26
源URL[http://ir.ihep.ac.cn/handle/311005/212326]  
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
GB/T 7714
Belle Collaboration. Observation of B--/+->rho(-/+)rho(0) decays[J]. PHYSICAL REVIEW LETTERS,2003,91(22).
APA Belle Collaboration.(2003).Observation of B--/+->rho(-/+)rho(0) decays.PHYSICAL REVIEW LETTERS,91(22).
MLA Belle Collaboration."Observation of B--/+->rho(-/+)rho(0) decays".PHYSICAL REVIEW LETTERS 91.22(2003).

入库方式: OAI收割

来源:高能物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。