Annihilation decays Bc-→η′(η,π0)l-(ν)over-bar

被引：1
|
作者：
Li, Gang
Ma, Wen-Gan
Jiang, Yi
Zhang, Ren-You
Han, Liang
Li, Xue-Qian
机构：
[1] CCAST, World Lab, Beijing 100080, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[3] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
来源：
PHYSICAL REVIEW D | 2006年 / 73卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.73.094010
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the semileptonic OZI-forbidden annihilation decays B-c(-)->eta(')(eta,pi(0))l(-)(nu) over bar for l=mu,e in the perturbative QCD, and carry out a precise calculation without any approximation for the one-loop contributions, which involves integrals of 4- and 5-point loop functions. Our results show that the branching ratios of decays B-c(-)->eta(')l(-)(nu) over bar, B-c(-)->eta l(-)(nu) over bar, and B-c(-)->pi(0)l(-)(nu) over bar turn out to be of orders 10(-4), 10(-5), and 10(-6), respectively, which could be observable in the future experiments at the LHC.
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页数：7
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