Phenomenology of CP Violation in a Flavor Blind MSSM and Beyond

TL;DR

This paper analyzes CP violation in the flavor blind MSSM, highlighting large effects in certain low-energy observables and emphasizing the need for additional flavor violation sources for effects in meson mixing.

Contribution

It demonstrates the impact of CP violating phases in a flavor blind MSSM on various low-energy observables, revealing correlations and limitations within this framework.

Findings

Large CP violation effects in EDMs and B decay asymmetries.

SM-like behavior of B_s mixing phase in this model.

Additional flavor violation needed for effects in meson mixing.

Abstract

We present an analysis of low energy CP violating observables in the Minimal Supersymmetric Standard Model (MSSM). We focus on the predictions of CP violation in b -> s transitions in the framework of a flavor blind MSSM, where the CKM matrix remains the only source of flavor violation, but additional CP violating phases are introduced in the soft SUSY breaking sector. We find large and strongly correlated effects in Delta F = 0 observables like the electric dipole moments (EDMs) of the electron and the neutron, as well as in Delta F = 1 observables like the time dependent CP asymmetries in B -> phi K_s and B -> eta' K_s, the direct CP asymmetry in b -> s gamma and in several CP asymmetries in B -> K* mu+ mu-. On the other hand, observables that are only sensitive to CP violation in Delta F = 2 transitions, in particular the B_s mixing phase, are found to be SM like in this framework. We stress that only in presence of additional sources of flavor violation, sizeable New Physics effects to CP violation in meson mixing can occur.