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Meson B-c annihilation to leptons and inclusive light hadrons
Wu, XG; Chang, CH; Chen, YQ; Fang, ZY; Wu, XG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2003
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号67期号:9页码:-
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.
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
关键词k+->mu(+)Nu-gamma Decay Muon Polarization Quark-model z(0) Decay Qcd Charmonium Lifetime Collisions Violation h(c)
学科领域Physics
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收录类别SCI
WOS记录号WOS:000183313000017
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13312
专题理论物理所1978-2010年知识产出
通讯作者Wu, XG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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GB/T 7714
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):-.
APA Wu, XG,Chang, CH,Chen, YQ,Fang, ZY,&Wu, XG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2003).Meson B-c annihilation to leptons and inclusive light hadrons.PHYSICAL REVIEW D,67(9),-.
MLA Wu, XG,et al."Meson B-c annihilation to leptons and inclusive light hadrons".PHYSICAL REVIEW D 67.9(2003):-.
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