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Further search for supersymmetry at √s=7  TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector

Author(s)
Taylor, Frank E.
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Abstract
This work presents a new inclusive search for supersymmetry (SUSY) by the ATLAS experiment at the LHC in proton-proton collisions at a center-of-mass energy √s=7   TeV in final states with jets, missing transverse momentum and one or more isolated electrons and/or muons. The search is based on data from the full 2011 data-taking period, corresponding to an integrated luminosity of 4.7  fb[superscript -1]. Single-lepton and multilepton channels are treated together in one analysis. An increase in sensitivity is obtained by simultaneously fitting the number of events in statistically independent signal regions, and the shapes of distributions within those regions. A dedicated signal region is introduced to be sensitive to decay cascades of SUSY particles with small mass differences (“compressed SUSY”). Background uncertainties are constrained by fitting to the jet-multiplicity distribution in background control regions. Observations are consistent with Standard Model expectations, and limits are set or extended on a number of SUSY models.
Date issued
2012-11
URI
http://hdl.handle.net/1721.1/76806
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aad, G. et al. “Further search for supersymmetry at √s=7  TeV in final states with jets, missing transverse momentum, and isolated leptons with the ATLAS detector.” Physical Review D 86.9 (2012).
Version: Final published version
ISSN
1550-7998
1089-4918

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