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.

arXiv comment12 pages including 4 EPS figures; updated version recomputes signal and background rates for LHC collisions at 10 TeV

References in corpus (13)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• MadEvent: Automatic Event Generation with MadGraph
• Signals for Minimal Supergravity at the CERN Large Hadron Collider II: Multilepton Channels
• Precise Prediction for M_W in the MSSM
• Probing Minimal Supergravity at the CERN LHC for Large $\tan \beta$
• Dijet Searches for Supersymmetry at the LHC
• Discovering Supersymmetry with Like-sign Dileptons
• Collider Phenomenology for Supersymmetry at Large $tan\beta$
• On the treatment of threshold effects in SUSY spectrum computations
• 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

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• TASI 2008 lectures on Collider Signals II: E_T^missing signatures and the dark matter connection
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