Landscape of Supersymmetric Particle Mass Hierarchies in Deflected Mirage Mediation

TL;DR

This paper explores the variety of particle mass hierarchies in deflected mirage mediation models of supersymmetry breaking, comparing them to minimal supergravity models, and identifies novel phenomenological patterns for collider studies.

Contribution

It provides a comprehensive analysis of mass hierarchy landscapes in DMM models, highlighting new patterns and proposing benchmark points for collider experiments.

Findings

DMM models exhibit diverse mass hierarchies including light charginos and neutralinos.

Novel patterns where heavy Higgs are lighter than the lightest superpartner are identified.

Two benchmark points are proposed for future collider analysis.

Abstract

With the aim of uncovering viable regions of parameter space in deflected mirage mediation (DMM) models of supersymmetry breaking, we study the landscape of particle mass hierarchies for the lightest four non-Standard Model states for DMM models and compare the results to that of minimal supergravity/constrained MSSM (mSUGRA/CMSSM) models, building on previous studies of Feldman, Liu, and Nath. Deflected mirage mediation is a string-motivated scenario in which the soft terms include comparable contributions from gravity mediation, gauge mediation, and anomaly mediation. DMM allows a wide variety of phenomenologically preferred models with light charginos and neutralinos, including novel patterns in which the heavy Higgs particles are lighter than the lightest superpartner. We use this analysis to motivate two DMM benchmark points to be used for more detailed collider studies. One model point has a higgsino-dominated lightest superpartner and a compressed yet heavy spectrum, while the other has a stau NLSP and similar features to mSUGRA/CMSSM models, but with a slightly less stretched spectrum.