Examination of flavor SU(3) in B, Bs → Kπ decays

被引：14

作者：

Chiang, Cheng-Wei ^{[3
,4
,5
]}

Gronau, Michael ^{[6
]}

Rosner, Jonathan L. ^{[1
,2
]}

机构：

[1] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[2] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[3] Natl Cent Univ, Dept Phys, Chungli 320, Taiwan

[4] Natl Cent Univ, Ctr Math & Theoret Phys, Chungli 320, Taiwan

[5] Acad Sinica, Inst Phys, Taipei 115, Taiwan

[6] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

来源：

PHYSICS LETTERS B | 2008年 / 664卷 / 03期

基金：

美国能源部;

关键词：

D O I：

10.1016/j.physletb.2008.05.017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study a relation between the weak phase gamma and the rates and CP asymmetries of several K pi decays of B(+), B(0), and B(s), emphasizing the impact of the latter measurements. Current data indicate large SU(3) breaking in the strong phases or failure of factorization (including its application to penguin amplitudes) in K pi modes of B(0) and Bs. SU(3) and factorization only remain approximately valid if the branching ratio for Bs -> K(-)pi(+) exceeds its current value of (5.27 +/- 1.17) x 10(-6) by at least 42%, or if a parameter describing ratios of form factors and decay constants is shifted from its nominal value by more than twice its estimated error. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：169 / 173

页数：5

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