RADIATIVE B-DECAY AS A TEST OF CKM UNITARITY

被引：14

作者：

BHATTACHARYYA, G ^{[1
]}

BRANCO, GC ^{[1
]}

CHOUDHURY, D ^{[1
]}

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST,D-80805 MUNICH,GERMANY

来源：

PHYSICS LETTERS B | 1994年 / 336卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90562-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We point out that R = Br(b --> dgamma)/Br(b --> sgamma) is a sensitive probe of possible violation of CKM unitarity. We compute R in a minimal extension of the Standard Model containing an additional isosinglet charge (-1/3) quark, which leads to a deviation from CKM unitarity.

引用

页码：487 / 493

页数：7

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