探测B_s^0-_s^0混合中的R宇称破缺超对称效应(英文)  

Probe the R-Parity Violating Supersymmetry Effects in the B_s^0-_s^0 Mixing

作　　者：王茹敏[1] 鲁公儒[1] 王恩科[1] 杨亚东[2] 

机构地区：[1]华中师范大学粒子物理研究所,武汉430070 [2]河南师范大学物理与信息工程学院,新乡453007

出　　处：《高能物理与核物理》2007年第4期332-336,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10305003,10475031,10440420018);教育部基金(NCET-04-0744,SRFDP-20040511005,CFKSTIP-704035)资助~~

摘　　要：最近由CDF合作组和DΦ合作组测量的Bs质量差ΔMs粗略地与标准模型预测值一致,因此这些测量将对限制超出标准模型的新物理信号提供一个机会．考虑Bs0-s0混合中的R宇称破缺超对称效应,并用最近ΔMs的实验结果去限制树图的R宇称破缺耦合．然后,通过从ΔMs实验限制得到R宇称破缺耦合的参数空间,显示在Bs宽度差ΔΓs中的R宇称破缺超对称效应．The recent measurements of the Bs mass difference △Ms by the CDF and DФ collaborations are roughly consistent with the Standard Model predictions, therefore, these measurements will afford an opportunity to constrain new physics scenarios beyond the Standard Model. We consider the impact of the Rparity violating supersymmetry in the B^0s-B-^0s mixing, and use the latest experimental results of △Ms to constrain B^0s-B-^0smixing. Then, using the constrained RPV the size of the R-parity violating tree level couplings in the B^0s-B-^0s parameter space from △Ms, we show the R-parity violating effects on the Bs width difference △Гs.

关 键 词：B^0s-B-^0s 混合 R宇称破缺 Bs质量差 Bs宽度差 

分 类 号：O572.2[理学—粒子物理与原子核物理]