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arXiv · 1108.0761

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

Qin Chang·Lin Han·Ya-Dong Yang
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Abstract

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.

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Qin Chang, Lin Han, Ya-Dong Yang. 2011-08-03. Implications of the Anomalies in B_s^0-\bar{B}_s^0 Mixing for Anomalous Tensor Couplings. https://doi.org/10.1088/0256-307x%2F29%2F3%2F031302

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