Early SUSY discovery at LHC via sparticle cascade decays to same-sign and multimuon states

Abstract

In the very early stages of LHC running, uncertainties in detector performance will lead to large ambiguities in jet, electron and photon energy measurements, along with inferred missing transverse energy. However, muon detection should be quite straightforward, with the added benefit that muons can be reliably detected down to transverse energies of order 5 GeV. Supersymmetry discovery through multimuon channels has been extensively explored in the literature, but always relying on hard ET^miss cuts. Here, we quantify signal and background rates for same-sign (SS) dimuon and multimuon production at the LHC without any ET^miss cuts. The LHC, operating at \sqrt{s}=10 TeV, should be able to discover a signal over expected background consistent with gluino pair production for m_{\tg}\alt 450 (550) GeV in the SS dimuon plus \ge 4 jets state with just 0.1 (0.2) fb^{-1} of integrated luminosity.

12 pages including 4 EPS figures; updated version recomputes signal and background rates for LHC collisions at 10 TeV

References in corpus (4)

• PYTHIA 6.4 Physics and Manual
• Dijet Searches for Supersymmetry at the LHC
• Missing energy look-alikes with 100 pb-1 at the LHC
• Early SUSY discovery at LHC without missing E_T: the role of multi-leptons

Cited by in corpus (5)

• SUSY Discovery Potential and Benchmarks for Early Runs at $\sqrt{s}=7$ TeV at the LHC
• Prospects for Hypercharged Anomaly Mediated SUSY Breaking at the LHC
• TASI 2008 lectures on Collider Signals II: E_T^missing signatures and the dark matter connection
• Probing dark matter and CMSSM with same-sign dilepton searches at the LHC
• Prospects of Gluino searches in multi-lepton channels in the light of ongoing LHC RUN-III