CP Violation in B_s Mixing in the SUSY SU(5) GUT with Right-handed Neutrinos
arXiv:0805.3327 · doi:10.1016/j.physletb.2008.10.011
Abstract
It is recently announced by the {\bf Ut}{\it fit} collaboration that the CP phase of the $B_s$ mixing amplitude, $Ï_{B_s}$, deviates more than $3 Ï$ from the standard-model prediction. In this paper we discuss how large correction to $Ï_{B_s}$ is possible in the supersymmetric SU(5) ground unified model (SUSY SU(5) GUT) with right-handed neutrinos. Here, we assume the supergravity-like boundary condition for the SUSY-breaking terms. We found that the 95% probability region derived by the {\bf Ut}{\it fit} collaboration is marginal in this model.
13 pages, 13 figures, version to appear in PLB