Production of long-lived staus in the Drell-Yan process

Abstract

We investigate the phenomenology of the gravitino dark matter scenario with a stau as the next-to-lightest supersymmetric particle at the LHC. For a wide range of gravitino masses the lighter stau is stable on the scale of a detector and gives rise to a prominent signature as a "slow muon". The direct stau production via the Drell-Yan process is always present and independent of the mass spectrum of the other superparticles, thus providing a lower bound for the discovery potential of this scenario. Performing a careful analysis with particular emphasis on the criteria for observing stau pairs and for distinguishing them from the background, we find that the 14 TeV run of the LHC has a promising potential for finding long-lived staus from Drell-Yan production up to very large stau masses.

15 pages + references, 12 eps figures; v2: analysis for 7 TeV LHC added, other results unchanged, minor improvements in presentation, references added; v3: presentation improved, matches journal version

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• LHC signature with long-lived stau in high reheating temperature scenario

Cited by in corpus (12)

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• Long-lived stau, sneutrino dark matter and right-slepton spectrum
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• Flavor-Safe Light Squarks in Higgs-Anomaly Mediation
• Long-Lived Sleptons at the LHC and a 100 TeV Proton Collider
• Long-Lived stop at the LHC with or without R-parity
• LHC prospects for minimal decaying Dark Matter
• Fixed Point and Anomaly Mediation in Partially $N=2$ Supersymmetric Standard Models
• A Solution to Lithium Problem by Long-Lived Stau
• Big-bang nucleosynthesis and Leptogenesis in CMSSM
• Long-lived charged sleptons at the ILC/CLIC