The O(αem/αs) correction to BR[B → Xsγ]

被引：32

作者：

Baranowski, K

Misiak, M

机构：

[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland

[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 2000年 / 483卷 / 04期

关键词：

bottom mesons; flavour changing neutral currents; electromagnetic corrections;

D O I：

10.1016/S0370-2693(00)00544-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We evaluate the O(alpha(em)/alpha(s)) correction to the rate of B -->X(s)gamma decay, i.e. we resum all the O[(alpha(em)lnM(W)(2)/m(b)(2))X (alpha(s)lnM(w)(2)/m(b)(2))(n)] corrections for n = 0,1,2,..... Our calculation differs from the previously available one by that makes into account the complete relevant set of operators. The correction is found to be negligible, i.e. it is below 1%, in accordance with the former results. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：410 / 416

页数：7

共 8 条

[1]

BARANOWSKI K, 1999, THESIS WARSAW U

[2] THE ANATOMY OF EPSILON'-EPSILON IN THE STANDARD MODEL [J].