Phenomenological Aspects of Gauge Mediation with Sequestered Supersymmetry Breaking in light of Dark Matter Detection

TL;DR

This paper explores a gauge mediation model with sequestered SUSY breaking where the neutralino, not the gravitino, is dark matter, analyzing its phenomenology and potential for direct detection, especially in light of recent experimental results.

Contribution

It introduces a novel gauge mediation model with a neutralino dark matter candidate and analyzes its phenomenological implications and detection prospects.

Findings

Light neutralino can be a viable dark matter candidate.

The light-Higgsino scenario aligns with recent CDMS results.

The model avoids flavor-changing neutral currents.

Abstract

In a recent work, a model of gauge mediation with sequestered supersymmetry (SUSY) breaking was proposed. In this model, the mass of the gravitino is O(100) GeV without causing the flavor-changing neutral-current problem. In contrast to traditional gauge mediation, the gravitino is not the lightest SUSY particle and the neutralino is the candidate of the dark matter. In this paper, we investigate phenomenological aspects of this model and discuss the possibility of the direct detection of the dark matter. In particular, we focus on the light neutralino case and find that the light-Higgsino scenario such as the focus point is interesting, taking account of the recent CDMS result.