Axigluon on like-sign charge asymmetry Aslb, FCNCs and CP asymmetries in B decays

被引：9
|
作者：
Chen, Chuan-Hung [1 ,2 ]
Faisel, Gaber [3 ,4 ]
机构：
[1] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan
[2] Natl Ctr Theoret Sci, Hsinchu 300, Taiwan
[3] Modern Univ Informat & Technol, Egyptian Ctr Theoret Phys, Cairo, Egypt
[4] Thamar Univ, Dept Phys, Fac Educ, Thamar, Yemen
来源：
PHYSICS LETTERS B | 2011年 / 696卷 / 05期
关键词：
CP asymmetry; Flavor physics; B-meson decays; CHIRAL COLOR; SUSY; CONSTRAINTS; VIOLATION; PHYSICS;
D O I：
10.1016/j.physletb.2011.01.010
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A non-universal axigluon in generalized chiral color models leads to flavor changing neutral currents (FCNCs) at tree level. We analyze phenomenologically the new contributions to B-q (q = d, s) mixing and the related CP asymmetries (CPAs) that are generated by axigluon exchange. We find that although Delta mB(q), can give a strict constraint on the parameters of b -> q transition, the precise measurement of sin 2 beta(0)(J/psi K) can further exclude the parameter space of d transition. The axigluon-mediated effects can enhance the like-sign dimuon charge asymmetry A(sl)(b) by one order of magnitude larger than the standard model prediction. Accordingly, large CPA sin 2 beta(J/psi phi)(s) and CPA difference sin 2 beta(0)(J Psi k) sin 2 beta(0)(phi k) are achieved. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：487 / 494
页数：8
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