SUSY darkmatter at the LHC - 7 TeV

Abstract

We have analysed the early LHC signatures of the minimal supergravity (mSUGRA) model. Our emphasis is on the 7 - $TeV$ run corresponding to an integrated luminosity of $\sim 1.0f{b}^{-1}$ although we have also discussed briefly the prospects at LHC-10 $TeV$. We focus on the parameter space yielding relatively light squark and gluinos consistent with the darkmatter relic density data and the LEP bounds on the lightest Higgs scalar mass. This parameter space is only allowed for non-vanishing trilinear soft breaking term $A_0$. A significant region of the parameter space with large to moderate negative values of $A_0$ consistent with the stability of the scalar potential and relic density production via neutralino annihilation and/or neutralino - stau coannihilation yields observable signal via the jets + missing transverse energy channel. The one lepton + jets + missing energy signal is also viable over a smaller but non-trivial parameter space. The ratio of the size of the two signals - free from theoretical uncertainties - may distinguish between different relic density generating mechanisms. With efficient $\tau$-tagging facilities at 7 $TeV$ the discriminating power may increase significantly. We also comment on other dark matter relic density allowed mSUGRA scenarios and variants there of in the context of LHC-7 $TeV$.

Brief comments on signals at 7 TeV in the Higgs funnel region of mSUGRA, models with non universal scalar and gaugino masses have been added. Accepted for publication in PRD

References in corpus (23)

• PYTHIA 6.4 Physics and Manual
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Averages of b-hadron and c-hadron Properties at the End of 2007
• The Hunt for New Physics at the Large Hadron Collider
• Search for squarks and gluinos in events with jets and missing transverse energy using 2.1 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV
• Supersymmetry discovery potential of the LHC at $\sqrt{s}=$10 and 14 TeV without and with missing $E_T$
• Capability of LHC to discover supersymmetry with \sqrt{s}=7 TeV and 1 fb^{-1}
• Collider signals and neutralino dark matter detection in relic-density-consistent models without universality
• Dark Matter as a Guide Toward a Light Gluino at the LHC
• Testing Yukawa-unified SUSY during year 1 of LHC: the role of multiple b-jets, dileptons and missing E_T
• Non-zero trilinear parameter in the mSUGRA model - dark matter and collider signals at Tevatron and LHC
• SUSY parameter determination at the LHC using cross sections and kinematic edges
• SUSY and Higgs Signatures Implied by Cancellations in $b\to s\gamma$
• Decoding the Mechanism for the Origin of Dark Matter in the Early Universe Using LHC Data
• Signatures of gaugino mass non-universality in cascade Higgs production at the LHC
• Non-universal scalar mass scenario with Higgs funnel region of SUSY dark matter: a signal-based analysis for the Large Hadron Collider
• Early SUSY discovery at LHC via sparticle cascade decays to same-sign and multimuon states
• Lepton Flavours at the Early LHC Experiments as the Footprints of the Dark Matter Producing Mechanisms
• Early search for supersymmetric dark matter models at the LHC without missing energy
• Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw
• The ATLAS discovery reach for SUSY models with early data
• SO(10) SUSY GUTs with mainly axion cold dark matter: implications for cosmology and colliders

Cited by in corpus (9)

• Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
• Many faces of low mass neutralino dark matter in the unconstrained MSSM, LHC data and new signals
• Search for the minimal universal extra dimension model at the LHC with $\sqrt{s}$=7 TeV
• Predictive Signatures of Supersymmetry: Measuring the Dark Matter Mass and Gluino Mass with Early LHC data
• SUSY Discovery Potential and Benchmarks for Early Runs at $\sqrt{s}=7$ TeV at the LHC
• Low mass neutralino dark matter in mSUGRA and more general models in the light of LHC data
• Do new data on [B+ -> tau+ nu_tau] decays point to an early discovery of supersymmetry at the LHC?
• Boosted top quarks in supersymmetric cascade decays at the LHC
• SUSY signals with small and large trilinear couplings at the LHC 7 TeV runs and neutralino dark matter