Patterns of flavor signals in supersymmetric models

TL;DR

This paper compares flavor signals in four supersymmetric models, analyzing quark and lepton flavor observables to identify distinctive patterns that could be tested in upcoming experiments.

Contribution

It provides a comprehensive analysis of flavor signals across multiple supersymmetric models, highlighting potential experimental signatures to distinguish their flavor structures.

Findings

Different models predict distinct flavor signal patterns.

Some models can be distinguished by specific B decay observables.

Lepton flavor violation rates vary significantly among models.

Abstract

Quark and lepton flavor signals are studied in four supersymmetric models, namely the minimal supergravity model, the minimal supersymmetric standard model with right-handed neutrinos, SU(5) supersymmetric grand unified theory with right-handed neutrinos and the minimal supersymmetric standard model with U(2) flavor symmetry. We calculate b --> s(d) transition observables in B_d and B_s decays, taking the constraint from the B_s--B_s-bar mixing recently observed at Tevatron into account. We also calculate lepton flavor violating processes mu --> e gamma, tau --> mu gamma and tau --> e gamma for the models with right-handed neutrinos. We investigate possibilities to distinguish the flavor structure of the supersymmetry breaking sector with use of patterns of various flavor signals which are expected to be measured in experiments such as MEG, LHCb and a future Super B Factory.