Anomalous CP-Violation in B_s-Bbar_s Mixing Due to a Light Spin-One Particle
High Energy Physics - Phenomenology
2011-02-11 v2 High Energy Physics - Experiment
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.
Keywords
Cite
@article{arxiv.1008.2153,
title = {Anomalous CP-Violation in B_s-Bbar_s Mixing Due to a Light Spin-One Particle},
author = {Sechul Oh and Jusak Tandean},
journal= {arXiv preprint arXiv:1008.2153},
year = {2011}
}
Comments
12 pages, 4 figures, somewhat expanded, references added, main conclusions unchanged, matches published version