ITP OpenIR  > 理论物理所2015年知识产出
Radiative leptonic B-c -> gamma l(v)over-bar decay in effective field theory beyond leading order
Wang, W; Zhu, RL; Zhu, RL (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, INPAC, Shanghai 200240, Peoples R China.
2015
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号75期号:8页码:360
文章类型Article
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.
学科领域Physics
资助者Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Shanghai Natural Science Foundation [15ZR1423100] ; Shanghai Natural Science Foundation [15ZR1423100] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Shanghai Natural Science Foundation [15ZR1423100] ; Shanghai Natural Science Foundation [15ZR1423100]
DOIhttp://dx.doi.org/10.1140/epjc/s10052-015-3583-6
关键词[WOS]QCD SUM-RULES ; MESON DISTRIBUTION AMPLITUDE ; WEAK DECAYS ; MODEL ; LIFETIME ; B-C(+)
收录类别SCI
语种英语
资助者Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Shanghai Natural Science Foundation [15ZR1423100] ; Shanghai Natural Science Foundation [15ZR1423100] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Office of Science and Technolny, Shanghai Municipal Government [11DZ2260700] ; Shanghai Natural Science Foundation [15ZR1423100] ; Shanghai Natural Science Foundation [15ZR1423100]
WOS类目Physics, Particles & Fields
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20900
专题理论物理所2015年知识产出
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.
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GB/T 7714
Wang, W,Zhu, RL,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.
APA Wang, W,Zhu, RL,&Zhu, RL .(2015).Radiative leptonic B-c -> gamma l(v)over-bar decay in effective field theory beyond leading order.EUROPEAN PHYSICAL JOURNAL C,75(8),360.
MLA Wang, W,et al."Radiative leptonic B-c -> gamma l(v)over-bar decay in effective field theory beyond leading order".EUROPEAN PHYSICAL JOURNAL C 75.8(2015):360.
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