Flavour Violation in Gauge-Mediated Supersymmetry Breaking Models: Experimental Constraints and Phenomenology at the LHC

TL;DR

This paper analyzes gauge-mediated supersymmetry breaking models, exploring how flavour violation affects experimental constraints and phenomenology at the LHC, highlighting the relaxation of constraints with non-minimal flavour violation.

Contribution

It demonstrates how non-minimal flavour violation in gauge-mediation models relaxes experimental constraints, enabling viable benchmark points for LHC phenomenology.

Findings

Large minimal models are excluded by current constraints

Non-minimal flavour violation relaxes experimental bounds

Viable benchmark points for LHC studies are identified

Abstract

We present an extensive analysis of gauge-mediated supersymmetry breaking models with minimal and non-minimal flavour violation. We first demonstrate that low-energy, precision electroweak, and cosmological constraints exclude large "collider-friendly" regions of the minimal parameter space. We then discuss various possibilities how flavour violation, although naturally suppressed, may still occur in gauge-mediation models. The introduction of non-minimal flavour violation at the electroweak scale is shown to relax the stringent experimental constraints, so that benchmark points, that are also cosmologically viable, can be defined and their phenomenology, i.e. squark and gaugino production cross sections with flavour violation, at the LHC can be studied.