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

页码：487 / 494

页数：8

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