Low scale supersymmetry at the LHC with jet and missing energy signature

TL;DR

This paper investigates how low-scale supersymmetry breaking can be detected at the LHC through jet plus missing energy signatures, emphasizing the role of light sgoldstinos in strengthening bounds on gravitino mass.

Contribution

It introduces the impact of TeV scale sgoldstinos on LHC search bounds, showing their contribution can significantly improve constraints on supersymmetry parameters.

Findings

Light sgoldstinos can enhance gravitino production cross sections.

Bounds on gravitino mass can be up to twice as strong with light sgoldstinos.

Comparison with ATLAS and CMS dijet resonance results.

Abstract

If supersymmetry is broken at TeV scale, particles from sector responsible for supersymmetry breaking - goldstino and sgoldstinos - can reveal themselves already at the LHC experiments. We discuss bounds on supersymmetry breaking scale from the LHC searches for events with a jet plus missing momentum signature focusing on the case of TeV scale sgoldstinos. We show that contribution of light sgoldstinos to the cross section of of gravitino pair production with a jet can be sizable and the bounds on the gravitino mass can be stronger by up to a factor of 2 as compared to those obtained in the heavy sgoldstino limit. We compare these bounds on parameters of the model to those obtained with the results of ATLAS and CMS searches for dijet resonances.