NLL corrections for B-meson radiative exclusive decays

被引：17

作者：

Asatryan, HH

Asatrian, HM

Wyler, D

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] Univ Zurich, Inst Theoret Phys, CH-8001 Zurich, Switzerland

来源：

PHYSICS LETTERS B | 1999年 / 470卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(99)01304-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the next-to-leading corrections to the branching ratio of exclusive B-->K*gamma decay. The renormalization scale dependence is reduced compared to the leading logarithmic result but there remains a dependence on a cutoff parameter of the hadronic model. The calculated corrections increase the predicted branching ratio by about 10%, but it remains in agreement with the experimental value. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：223 / 232

页数：10

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