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arXiv · 1008.2153

Anomalous CP-Violation in B_s-Bbar_s Mixing Due to a Light Spin-One Particle

Sechul Oh·Jusak Tandean
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Abstract

The recent measurement of the like-sign dimuon charge asymmetry in semileptonic b-hadron decays by the D0 Collaboration is about 3 sigmas away from the standard-model prediction, hinting at the presence of CP-violating new physics in the mixing of B_s mesons. We consider the possibility that this anomalous result arises from the contribution of a light spin-1 particle. Taking into account various experimental constraints, we find that the effect of such a particle with mass below the b-quark mass can yield a prediction consistent with the anomalous D0 measurement within its one-sigma range.

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Sechul Oh, Jusak Tandean. 2010-08-12. Anomalous CP-Violation in B_s-Bbar_s Mixing Due to a Light Spin-One Particle. https://doi.org/10.1016/j.physletb.2011.01.030

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