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Semileptonic B-c decays and charmonium distribution amplitude
黄涛(理); Zuo F(左芬); Huang, T; Zuo, F
2007
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号51期号:4页码:833-839
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
摘要In this paper we study the semileptonic decays of the B-c meson in the light-cone sum rule (LCSR) approach. The result for each channel depends on the corresponding distribution amplitude (DA) of the final meson. For the case of B, decaying into a pseudoscalar meson, to twist-3 accuracy only the leading twist distribution amplitude is involved if we start from a chiral current. If we choose a suitable chiral current in the vector meson case, the main twist-3 contributions are also eliminated and we can consider the leading twist contribution only. The leading twist distribution amplitudes of the charmonium and other heavy mesons are given by a model approach in a reasonable way. Employing this charmonium distribution amplitude we find a cross section sigma-(e(+)e(-) -> J/Psi +eta(c)) similar or equal to 22.8 fb that is consistent with Belle and BaBar data. Based on this model, we calculate the form factors for various B-c decay modes in the corresponding regions. Extrapolating the form factors to the whole kinetic regions, we get the decay widths and branching ratios for various B, decay modes including their tau modes when they are kinematically accessible.
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1140/epjc/s10052-007-0333-4
URL查看原文
语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Particles & Fields
WOS记录号WOS:000250869700005
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被引频次:36[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/311005/238571
专题理论物理室
作者单位中国科学院高能物理研究所
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Huang T,Zuo F,Huang, T,et al. Semileptonic B-c decays and charmonium distribution amplitude[J]. EUROPEAN PHYSICAL JOURNAL C,2007,51(4):833-839.
APA 黄涛,左芬,Huang, T,&Zuo, F.(2007).Semileptonic B-c decays and charmonium distribution amplitude.EUROPEAN PHYSICAL JOURNAL C,51(4),833-839.
MLA 黄涛,et al."Semileptonic B-c decays and charmonium distribution amplitude".EUROPEAN PHYSICAL JOURNAL C 51.4(2007):833-839.
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