Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories

TL;DR

This paper provides a comprehensive analysis of flavor-changing neutral currents and CP violation in SUSY theories, exploring their correlations across various processes and proposing a diagnostic 'DNA-Flavour Test' to distinguish different new physics models.

Contribution

It introduces a model-independent framework for analyzing FCNC and CPV effects in SUSY, and develops a 'DNA-Flavour Test' to differentiate among SUSY and other NP scenarios based on flavor observable patterns.

Findings

Correlations between CP asymmetries and rare decays help distinguish SUSY models.

Right-handed currents and Higgs penguins significantly impact B_s mixing.

The 'DNA-Flavour Test' offers a new tool for identifying NP models.

Abstract

We perform an extensive study of FCNC and CP Violation within Supersymmetric (SUSY) theories with particular emphasis put on processes governed by b->s transitions and of their correlations with processes governed by b->d transitions, s->d transitions, $D^0-\bar D^0$ oscillations, lepton flavour violating decays, electric dipole moments and (g-2)_mu. We first perform a comprehensive model-independent analysis of Delta F=2 observables and we emphasize the usefulness of the R_b-gamma plane in exhibiting transparently various tensions in the present UT analyses. Secondly, we consider a number of SUSY models: the general MSSM, a flavour blind MSSM, the MSSM with Minimal Flavour Violation as well as SUSY flavour models based on abelian and non-abelian flavour symmetries that show representative flavour structures in the soft SUSY breaking terms. We show how the characteristic patterns of correlations among the considered flavour observables allow to distinguish between these different SUSY scenarios. Of particular importance are the correlations between the CP asymmetry S_psi phi and B_s->mu^+\mu^-, between the anomalies in S_phi K_S and S_psi phi, between S_phi K_S and d_e, between S_psi phi and (g-2)_mu and also those involving lepton flavour violating decays. In our analysis, the presence of right-handed currents and of the double Higgs penguin contributions to B_s mixing plays a very important role. We propose a "DNA-Flavour Test" of NP models including Supersymmetry, the Littlest Higgs model with T-parity and the Randall-Sundrum model with custodial protection, with the aim of showing a tool to distinguish between these NP scenarios, once additional data on flavour changing processes become available.