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arXiv 1108.0761hep-phhep-ex
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B_s^0- \bar{B}_s^0混合中的反常对反常张量耦合的意义

Implications of the Anomalies in B_s^0-\bar{B}_s^0 Mixing for Anomalous Tensor Couplings

Qin Chang, Lin Han, Ya-Dong Yang

摘要:

基于最近在中性B衰变中观察到的反常的大双μ子电荷不对称性和在B_s->J/π衰变中混合诱导的CP不对称性中意外的大CP相,我们研究了反常张量耦合的影响,以寻求可能的解决方案。在观测值^{J/J_s}_s,a_{sl} ^s和ΔM_s的约束下,参数空间受到严格的限制.从数字上来说,我们发现B_s^0- \bar{B}_s^0混合系统中的反常现象可以同时被色单重态或色八重态张量算符及其各自的非平凡新弱相位PDMATHABMO_{T1} 28.0所诱导的贡献所缓和(15.6)度或10 °_{T8} \approx -62.1(-74.2)度和相关强度参数g_{T1} \approx 6.7(8.5)\times 10^{-2}或g_{T8} \approx 1.9(2.4)CP破坏阶段的\times 10^{-2}分别为:ε ^{J/ε ^}_s=-0.77(+0.29,-0.37)(-2.36(+0.37,-0.29))。

英文摘要:

Motivated by the recently observed anomalous large dimuon charge asymmetry in neutral B decays and the unexpected large CP phase in the mixing-induced CP asymmetry for B_s-->J/ψϕdecay, we study the effects of the anomalous tensor couplings to pursue possible solution. With the constraints from the obsevables ϕ^{J/ψϕ}_s, a_{sl}^s and ΔM_s, the parameter spaces are severely restricted. Numerically, we find the anomalies in B_s^0-\bar{B}_s^0 mixing system could be moderated simultaneously by the contributions induced by the color-singlet or color-octet tensor operators with their respective nontrivial new weak phase ϕ_{T1}\approx28.0(15.6) degree or ϕ_{T8}\approx-62.1(-74.2) degree and relevant strength parameters g_{T1}\approx6.7(8.5)\times10^{-2} or g_{T8}\approx1.9(2.4)\times10^{-2} for the CP-violating phase ϕ^{J/ψϕ}_s=-0.77(+0.29,-0.37)(-2.36(+0.37,-0.29)), respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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