Chiral Enhancement in the MSSM -- An Overview

TL;DR

This paper reviews the origin and impact of chirally enhanced loop corrections in the MSSM, detailing resummation techniques and their implications for fermion-Higgs interactions and flavor physics.

Contribution

It provides a comprehensive overview of chirally enhanced corrections in the MSSM, including resummation methods and applications to flavor violation and CP violation.

Findings

Resummation of chirally-enhanced corrections improves accuracy of fermion-Higgs couplings.

Model with radiative flavor-violation addresses SUSY-CP and flavor problems.

Application explains deviation in Bs mixing phase from SM predictions.

Abstract

In this article I review the origin and the effects of chirally enhanced loop-corrections in the MSSM based on Refs. [1-3]. Chiral enhancement is related to fermion-Higgs couplings (or self-energies when the Higgs field is replaced by its vev). I describe the resummation of these chirally-enhanced corrections to all orders in perturbation theory and the calculation of the effective fermion-Higgs and gaugino(higgsino)-fermion vertices. As an application a model with radiative flavor-violation is discussed which can solve the SUSY-CP and the SUSY-flavor problem while it is still capable of explaining the observed deviation from the SM in the Bs mixing phase.