Discovery Potential for Low-Scale Gauge Mediation at Early LHC

TL;DR

This paper evaluates the discovery potential of low-scale gauge-mediated supersymmetry models at the early LHC, focusing on specific next-to-lightest particles and realistic experimental conditions.

Contribution

It provides a comprehensive analysis applicable to various GMSB models, including minimal models with metastable vacua, highlighting early LHC testability.

Findings

LHC can potentially discover certain GMSB models early on.

Analysis applies to a broad class of GMSB models beyond minimal versions.

Metastable vacuum models are testable with current LHC capabilities.

Abstract

Low-scale gauge-mediated supersymmetry(SUSY)-breaking (GMSB) models with gravitino mass m_{3/2}<16 eV are attractive, since there are no flavor and cosmological problems. In this paper, we thoroughly study the collider signal in the case that the next-to-lightest SUSY particle is the bino or slepton and investigate the discovery potential of the LHC. Our result is applicable to a wider class of GMSB models other than the minimal GMSB models and we pay particular attention to realistic experimental setups. We also apply our analysis to the minimal GMSB models with a metastable SUSY-breaking vacuum and we show, by requiring sufficient stability of the SUSY-breaking vacuum, these models can be tested at an early stage of the LHC.