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题名: Radiative leptonic B-c -> gamma l(v)over-bar decay in effective field theory beyond leading order
作者: Wang, W;  Zhu, RL
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2015
卷号: 75, 期号:8, 页码:360
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-015-3583-6
通讯作者: Zhu, RL (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, INPAC, Shanghai 200240, Peoples R China.
文章类型: Article
英文摘要: We study the radiative leptonic B-c -> gamma l (v) over bar decays in nonrelativistic QCD effective field theory, and we explore the contribution from a fast-moving photon. As a result, interactions between the photon and the heavy quarks can be integrated out, resulting in the factorization formula for the decay amplitude. We calculate not only the relevant short-distance coefficients at leading order and next-to-leading order in alpha(s), but also the nonrelativistic corrections at the order |v|(2) in our analysis. We find that the QCD corrections can significantly decrease the branching ratio, and this is of great importance in extracting the long-distance operator matrix elements of B-c. For phenomenological application, we present our results for the photon energy, lepton energy and lepton-neutrino invariant mass distribution.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: QCD SUM-RULES ;  MESON DISTRIBUTION AMPLITUDE ;  WEAK DECAYS ;  MODEL ;  LIFETIME ;  B-C(+)
收录类别: SCI
项目资助者: Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ;  Shanghai Natural Science Foundation [15ZR1423100]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20900
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Wang, W,Zhu, RL. Radiative leptonic B-c -> gamma l(v)over-bar decay in effective field theory beyond leading order[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(8):360.
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