Λb→Σc(*) πl(ν)over-bar in the heavy quark, chiral, and large Nc limits -: art. no. 014006

被引：0

作者：

Lee, JP ^{[1
]}

Liu, C

Song, HS

机构：

[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[2] Seoul Natl Univ, Ctr Theoret Phys, Seoul 151742, South Korea

[3] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China

[4] Korea Inst Adv Study, Seoul 130012, South Korea

来源：

PHYSICAL REVIEW D | 2000年 / 61卷 / 01期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The decay of Lambda(b) --> Sigma(c)((*)) pi/<(nu)over bar> processes is calculated in the framework of heavy baryon chiral perturbation theory with the help of the 1/N-c expansion. The decay rate distributions over nu . nu' where nu and nu' are the four-vector velocities of Lambda(b) and Sigma(c)((*)), respectively, and over the pion and lepton energies, are given. The decay branching ratios amount to about 1.21(0.971)% for Lambda(b)-->Sigma(c) pi/<(nu)over bar> and 0.798(0.640)% for Lambda(b)-->Sigma(c)* pi/<(nu)over bar> by using the baryonic Isgur-Wise function predicted by QCD sum rules (large N-c QCD).

引用

页数：7

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