Large Dimuon Asymmetry and a Non-Universal Z′ Boson in the Bs−Bs System

作     者：CHANG Qin WANG Ru-Min XU Yuan-Guo CUI Xiao-Wei 常钦;王茹敏;徐元国;崔晓伟

作者机构：Department of PhysicsHenan Normal UniversityXinxiang 453007 Institute of Particle PhysicsHuazhong Normal UniversityWuhan 430079 College of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第8期

页      面：47-50页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：by the National Natural Science Foundation of China under Grant Nos 11075059 and 11047145 the Project of Basic and Advanced Technology Research of Henan Province under Grant No.112300410021 Startup Foundation for Doctor of Henan Normal University under Grant No 1006 

主　　题：rigorous limiting neutral 

摘      要：Motivated by recently observed anomalously large dimuon charge asymmetry in neutral B decays reported by the D0 collaboration,we study the effects of a family of non-universal Z′bosons for possible *** fitting results for the Z′parameters are presented under the constraints from the D0 result for asls and UTfit results for CBs andφBs in two limiting scenarios for left−and right-handed b-s-Z′*** find the couplings BsbL and BsbR are rigorously bounded but not excluded,which means that the anomalies in the Bs−Bs system could be moderated simultaneously within a non-universal Z′***,a new weak phaseφLs∼−60°(−80°)in scenario I or∼30°(10°)in scenario II is crucial to moderate the large dimuon charge asymmetry.