Discriminating Minimal SUGRA and Minimal Gauge Mediation Models at the Early LHC

TL;DR

This paper explores how to distinguish between minimal SUGRA and minimal gauge mediation models at the LHC, despite their similar collider signatures, by using significance variables early after discovery.

Contribution

It introduces a method using significance variables to differentiate between these SUSY models at the LHC in minimal cases, achievable at an early stage.

Findings

Discrimination between models is possible early after discovery.

Significance variables effectively distinguish models with similar signatures.

Method applicable in minimal SUSY scenarios at the LHC.

Abstract

Among various supersymmetric (SUSY) standard models, the gravity mediation model with a neutralino LSP and the gauge mediation model with a very light gravitino are attractive from the cosmological view point. These models have different scales of SUSY breaking and their underlying physics in high energy is quite different. However, if the sparticles' decay into the gravitino is prompt in the latter case, their collider signatures can be similar: multiple jets and missing transverse momentum. In this paper, we study the discrimination between these models in minimal cases at the LHC based on the method using the significance variables in several different modes and show the discrimination is possible at a very early stage after the discovery.