Compressed SUSY at 14 TeV LHC

TL;DR

This paper investigates the potential to detect or exclude compressed supersymmetric gluinos at the 14 TeV LHC, focusing on how the mass difference between gluino and neutralino affects the search sensitivity.

Contribution

It provides the projected gluino mass reach at 14 TeV LHC for various mass splittings in a compressed SUSY scenario, highlighting the impact of degeneracy on exclusion limits.

Findings

Gluino masses below 1 TeV can be excluded with 100 fb$^{-1}$ for near-degenerate cases.

The mass limit increases to 1.2-1.3 TeV for larger mass splittings (~200 GeV).

Degenerate gluino scenarios could see an extension of current mass limits by 400-500 GeV.

Abstract

In this work we study the collider phenomenology of a compressed supersymmetric model with gluino and the lightest neutralino. All other sparticles are assumed to be heavy. We consider gluino pair production at the 14 TeV LHC and present the mass reach of gluino as a function of mass splitting between gluino and the the lightest neutralino. We find that the gluino mass below 1 TeV can be excluded at 95% CL with integrated luminosity of 100 fb$^{-1}$ for extreme degenerate case where mass separation between gluino and the lightest neutralino is about 20 GeV. On the other hand, the lower bound on the mass of gluino increases to 1.2 - 1.3 TeV if the mass splitting between the gluino and neutralino is about 200 GeV. This result shows that for degenerate gluino, the current mass limit may extend approximately 400-500 GeV at 14 TeV LHC.