The MSSM with Large Gluino Mass

TL;DR

This paper investigates the detection prospects of the MSSM with very heavy gluinos at the LHC, highlighting challenges in discovering supersymmetry through leptonic signatures when gluinos are large.

Contribution

It analyzes how large gluino masses affect LHC signatures and identifies scenarios where leptonic signals are ineffective for discovery.

Findings

Leptonic signatures may not be sufficient for discovery in certain MSSM parameter regions.

The no-lepton + jets + missing energy signature remains the primary discovery channel.

Heavy gluino mass reduces the LHC's ability to detect supersymmetry, especially with LSP and squark masses close.

Abstract

We study the Minimal Supersymmetric Standard Model (MSSM) with large gluino mass m_{\tilde{g}} >> 1 TeV. In particular, we discuss the LHC supersymmetry discovery signatures with n leptons + jets + E^{miss}_T, n >= 0 for the MSSM with large gluino mass. We show that for some relations among squark and neutralino masses leptonic signatures with n leptons + jets + E^{miss}_T, n >= 1 do not allow to discover supersymmetry at the LHC and the only supersymmetry discovery signature remains the signature with no leptons + jets + E^{miss}_T. Moreover, for LSP mass close to squark masses the LHC discovery potential for this signature is strongly reduced.