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题名: Meson B-c annihilation to leptons and inclusive light hadrons
作者: Wu, XG ;  Chang, CH ;  Chen, YQ ;  Fang, ZY
刊名: PHYSICAL REVIEW D
出版日期: 2003
卷号: 67, 期号:9, 页码:-
关键词: K+->MU(+)NU-GAMMA DECAY ;  MUON POLARIZATION ;  QUARK-MODEL ;  Z(0) DECAY ;  QCD ;  CHARMONIUM ;  LIFETIME ;  COLLISIONS ;  VIOLATION ;  H(C)
学科分类: Physics
通讯作者: Wu, XG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China
英文摘要: The annihilation of the B-c meson to leptons and inclusive light hadrons is analyzed in the framework of nonrelativistic QCD (NRQCD) factorization. We find that the decay mode, which escapes from the helicity suppression, contributes a sizable fraction width. The branching ratio due to the contributions from the color-singlet component of the B-c meson can be of the order of 10(-2). The contributions from the color-octet components are estimated. With the consideration of the NRQCD velocity scaling rule, we find that the color-octet contributions are sizable too, especially in a certain phase space of the annihilation. They are greater than (or comparable to) those from the color-singlet component. A few observables on the spectrum of charged leptons (e, mu) relevant to the contributions are suggested that may be used as measurements of the evidence of the color-octet components in future B-c experiments. A kind of typical "long-distance contributions'' in the annihilation is also estimated.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000183313000017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13312
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wu, XG,Chang, CH,Chen, YQ,et al. Meson B-c annihilation to leptons and inclusive light hadrons[J]. PHYSICAL REVIEW D,2003,67(9):-.
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