Using rates to measure mixed modulus-anomaly mediated supersymmetry breaking at the LHC

TL;DR

This paper explores how event rate measurements at the LHC can distinguish between different supersymmetry breaking models, specifically MMAMSB, CMSSM, and mAMSB, improving model identification accuracy.

Contribution

It demonstrates that incorporating event rate data enables rapid and reliable differentiation of SUSY breaking models at the LHC, surpassing traditional mass edge analysis.

Findings

Event rate information improves model discrimination.

Including rates allows for quicker model measurement.

Mass edge analysis alone is insufficient for unique identification.

Abstract

If SUSY is discovered at the LHC, the task will immediately turn to determining the model of SUSY breaking. Here, we employ a Mixed Modulus-Anomaly Mediated SUSY Breaking (MMAMSB) model with very similar LHC phenomenology to the more conventionally studied Constrained Minimal SUSY Model (CMSSM) and minimal Anomaly Mediated SUSY Breaking (mAMSB) models. We then study whether the models can be distinguished and measured. If we only fit to the various mass edges and mass end-points from cascade decay chains that are normally studied, a unique determination and measurement of the model is problematic without substantial amounts of LHC data. However, if event rate information is included, we can quickly distinguish and measure the correct SUSY model and exclude alternatives.