Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 7 TeV proton-proton collision data with the ATLAS detector

Salvatore, F and The ATLAS Collaboration, (2012) Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 7 TeV proton-proton collision data with the ATLAS detector. European Physical Journal C: Particles and Fields, 72 (2215). pp. 1-22. ISSN 1434-6044

[img] PDF - Published Version
Restricted to SRO admin only

Download (754kB)

Abstract

A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, and at least one hadronically decaying τ lepton, with zero or one additional light lepton (e/μ), has been performed using 4.7 fb−1 of proton-proton collision data at s√=7~TeV recorded with the ATLAS detector at the Large Hadron Collider. No excess above the Standard Model background expectation is observed and a 95 % confidence level visible cross-section upper limit for new phenomena is set. In the framework of gauge-mediated SUSY-breaking models, lower limits on the mass scale Λ are set at 54 TeV in the regions where the τ˜1 is the next-to-lightest SUSY particle (tanβ>20). These limits provide the most stringent tests to date of GMSB models in a large part of the parameter space considered.

Item Type: Article
Additional Information: Primary editor of the paper and sole responsible of the analysis of the 2tau final state and the statistical combination of the 4 channels discussed in the paper. First ATLAS SUSY paper combining all tau final states and providing best limit on GMSB parameter space to date.
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Fabrizio Salvatore
Date Deposited: 03 Dec 2012 12:25
Last Modified: 11 Mar 2017 02:54
URI: http://sro.sussex.ac.uk/id/eprint/41717

View download statistics for this item

📧 Request an update