Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 20 fb−1of √s= 8 TeV proton-proton collision data with the ATLAS detector [Book Review]

Abstract

© 2014, The Author. A search for supersymmetry in events with large missing transverse momentum, jets, at least one hadronically decaying tau lepton and zero or one additional light leptons, has been performed using 20.3fb−1of proton-proton collision data at √ s= 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No excess above the Standard Model background expectation is observed in the various signal regions and 95% confidence level upper limits on the visible cross section for new phenomena are set. The results of the analysis are interpreted in several SUSY scenarios, significantly extending previous limits obtained in the same final states. In the framework of minimal gauge-mediated SUSY breaking models, values of the SUSY breaking scale Λ below 63 TeV are excluded, independently of tan β. Exclusion limits are also derived for an mSUGRA/CMSSM model, in both the R-parity-conserving and R-parity-violating case. A further interpretation is presented in a framework of natural gauge mediation, in which the gluino is assumed to be the only light coloured sparticle and gluino masses below 1090 GeV are excluded.

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Author Profiles

Brandon Gonzalez
State University of New York, Buffalo
Mike Antonelli
Ohio University
Roger Abreu
Ashford University
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