Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/102543
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Type: Journal article
Title: Searches for supersymmetry with the ATLAS detector using final states with two leptons and missing transverse momentum in √s=7 TeV proton–proton collisions
Other Titles: Searches for supersymmetry with the ATLAS detector using final states with two leptons and missing transverse momentum in root s = 7 TeV proton-proton collisions
Author: Aad, G.
ATLAS Collaboration
Citation: Physics Letters B, 2012; 709(3):137-157
Publisher: Elsevier
Issue Date: 2012
ISSN: 0370-2693
1873-2445
Statement of
Responsibility: 
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)
Abstract: Results of three searches are presented for the production of supersymmetric particles decaying into final states with missing transverse momentum and exactly two isolated leptons, e or μ. The analysis uses a data sample collected during the first half of 2011 that corresponds to a total integrated luminosity of of proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. Opposite-sign and same-sign dilepton events are separately studied, with no deviations from the Standard Model expectation observed. Additionally, in opposite-sign events, a search is made for an excess of same-flavour over different-flavour lepton pairs. Effective production cross sections in excess of 9.9 fb for opposite-sign events containing supersymmetric particles with missing transverse momentum greater than 250 GeV are excluded at 95% CL. For same-sign events containing supersymmetric particles with missing transverse momentum greater than 100 GeV, effective production cross sections in excess of 14.8 fb are excluded at 95% CL. The latter limit is interpreted in a simplified electroweak gaugino production model excluding chargino masses up to 200 GeV, under the assumption that slepton decay is dominant.
Rights: © 2012 CERN. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
RMID: 0020132843
DOI: 10.1016/j.physletb.2012.01.076
Appears in Collections:Physics publications

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