IHEP OpenIR  > 实验物理中心
Measurement of the Differential Branching Fraction and Forward-Backward Asymmetry for B -> K((*))l(+) l(-)
Belle Collaboration
2009
发表期刊PHYSICAL REVIEW LETTERS
卷号103期号:17
通讯作者Wei, JT (reprint author), Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
摘要We study B -> Kd(*)l(+)l(-) decays (l = e,u) based on a data sample of 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We report the differential branching fraction, isospin asymmetry, K* polarization, and the forward-backward asymmetry (A(FB)) as functions of q(2) = M(ll)(2)c(2). The fitted A(FB) spectrum exceeds the standard model expectation by 2.7 standard deviations. The measured branching fractions are B(B -> K*l(+)l(-)) = (10: 7(-1.0)(+1.1)) x 10(-7) and B(B -> Kl(+)l(-)) = (4.8 (+0.5)(-0.4) +/- 0.3) x 10(-7), where the first errors are statistical and the second are systematic, with the muon to electron ratios R-K* = 0.83 +/- 0: 17 +/- 0.08 and R-K = 1.03 +/- 0.19 +/- 0.06.
关键词DECAYS BELLE MODEL
学科领域Physics
DOI10.1103/PhysRevLett.103.171801
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000271164500015
引用统计
被引频次:209[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212912
专题实验物理中心
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. Measurement of the Differential Branching Fraction and Forward-Backward Asymmetry for B -> K((*))l(+) l(-)[J]. PHYSICAL REVIEW LETTERS,2009,103(17).
APA Belle Collaboration.(2009).Measurement of the Differential Branching Fraction and Forward-Backward Asymmetry for B -> K((*))l(+) l(-).PHYSICAL REVIEW LETTERS,103(17).
MLA Belle Collaboration."Measurement of the Differential Branching Fraction and Forward-Backward Asymmetry for B -> K((*))l(+) l(-)".PHYSICAL REVIEW LETTERS 103.17(2009).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
971.pdf(151KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Belle Collaboration]的文章
百度学术
百度学术中相似的文章
[Belle Collaboration]的文章
必应学术
必应学术中相似的文章
[Belle Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。