Factorization of radiative leptonic decays of B- and D- mesons

被引：12
|
作者：
Yang, Ji-Chong [1 ]
Yang, Mao-Zhi [1 ]
机构：
[1] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
来源：
NUCLEAR PHYSICS B | 2014年 / 889卷
基金：
中国国家自然科学基金;
关键词：
QCD FACTORIZATION; HEAVY; EXTRACTION;
D O I：
10.1016/j.nuclphysb.2014.10.027
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
In this work, we study the factorization of the radiative leptonic decays of B- and D- mesons, the contributions of the order O(Lambda(QCD)/m(Q)) are taken into account. The factorization is proved to be valid explicitly at the order O(alpha(S)Lambda(QCD)/m(Q)). The hard kernel is obtained. The numerical results are calculated using the wave-function obtained in relativistic potential model. The O(Lambda(QCD)/m(Q)) contribution is found to be very important, the correction to the decay amplitudes of B- --> gamma e (v) over bar is about 20%-30%. For D mesons, the O(Lambda(QCD)/m(Q)) contributions are more important. (C) 2014 The Authors. Published by Elsevier B.V.
引用
收藏
页码：778 / 800
页数：23
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