Early search for supersymmetric dark matter models at the LHC without missing energy

TL;DR

This paper proposes a method to detect supersymmetric dark matter at the LHC early on by using jet and lepton counts instead of missing energy, enabling tests of models with light sleptons at low luminosity.

Contribution

It introduces a novel search strategy for supersymmetry at the LHC that does not rely on missing energy, focusing on jet and lepton signatures for early discovery.

Findings

Models with gluino masses up to ~700 GeV can be tested with 200-300 pb$^{-1}$ at 10 TeV.

Light sleptons are crucial for early detection signals.

The approach allows supersymmetry searches without missing energy signatures.

Abstract

We investigate early discovery signals for supersymmetry at the Large Hadron Collider without using information about missing transverse energy. Instead we use cuts on the number of jets and isolated leptons (electrons and/or muons). We work with minimal supersymmetric extensions of the standard model, and focus on phenomenological models that give a relic density of dark matter compatible with the WMAP measurements. An important model property for early discovery is the presence of light sleptons, and we find that for an integrated luminosity of only 200--300 pb$^{-1}$ at a center-of-mass energy of 10 TeV models with gluino masses up to $\sim 700$ GeV can be tested.