Supersymmetry Signals at the LHC under the most favorable SUGRA scenario

TL;DR

This paper identifies the most promising supersymmetry signals for early LHC runs within a specific SUGRA scenario featuring light gluinos and third-generation scalars, emphasizing particular final states for discovery.

Contribution

It proposes a high-scale SUGRA scenario with non-universal scalar and gaugino masses that enhances early detection prospects of SUSY at the LHC.

Findings

Optimal final states include 4b+MET, 4b+lepton+MET, and 2b+2lepton+MET.

Light gluinos and third-generation scalars are achievable with non-universal mass parameters.

Compared results with minimal SUGRA scenario to justify the discovery potential.

Abstract

Given that it will take quite some time for the Large Hadron Collider (LHC) to reach its desired luminosity, it is important to investigate the most favorable scenario in which supersymmetry (SUSY) may be discovered at the early runs at the LHC. Our aim in this work is to find such a scenario within the gravity mediated SUSY breaking (SUGRA) framework and select a class of final states that warrant a discovery at the very early runs of the LHC. It turns out that such a situation can be associated with a scenario where gluinos are sufficiently light and so are the third generation scalars while the first two family scalars are heavy. We find that this can be achieved from a high-scale set-up with scalar mass non-universality in the third family and gaugino mass non-universality with $M_3 < M_1, M_2$. We show that the final state channels which are most favorable in such a region of parameter space are $4b+{E_{T}}\!\!\!\!/$, $4b+\ell+{E_{T}}\!\!\!\!/$ and $2b+2\ell+{E_{T}}\!\!\!\!/$. We also justify our claim by comparing the results with a minimal supergravity (mSUGRA) scenario with similar gluino mass.