Moduli Stabilization and Supersymmetry Breaking in Deflected Mirage Mediation

TL;DR

This paper introduces 'deflected mirage mediation,' a supersymmetry breaking model combining gravity, anomaly, and gauge mediation, which modifies gaugino unification and low-energy spectra, with implications for LHC phenomenology.

Contribution

It generalizes mirage mediation to include gauge contributions, showing how they affect soft parameters and low-energy spectra in KKLT-inspired models.

Findings

Gaugino mass unification is deflected by gauge contributions.

Possible LSPs include gluino and well-tempered neutralino.

The model's low-energy spectra are analyzed for LHC relevance.

Abstract

We present a model of supersymmetry breaking in which the contributions from gravity/modulus, anomaly, and gauge mediation are all comparable. We term this scenario "deflected mirage mediation," which is a generalization of the KKLT-motivated mirage mediation scenario to include gauge mediated contributions. These contributions deflect the gaugino mass unification scale and alter the pattern of soft parameters at low energies. In some cases, this results in a gluino LSP and light stops; in other regions of parameter space, the LSP can be a well-tempered neutralino. We demonstrate explicitly that competitive gauge-mediated terms can naturally appear within phenomenological models based on the KKLT setup by addressing the stabilization of the gauge singlet field which is responsible for the masses of the messenger fields. For viable stabilization mechanisms, the relation between the gauge and anomaly contributions is identical in most cases to that of deflected anomaly mediation, despite the presence of the Kahler modulus. Turning to TeV scale phenomenology, we analyze the renormalization group evolution of the supersymmetry breaking terms and the resulting low energy mass spectra. The approach sets the stage for studies of such mixed scenarios of supersymmetry breaking at the LHC.