Search for Supersymmetry in Events with Four or More Leptons in √s = 8 TeV pp Collisions with the ATLAS Detector
Name
Aad-2014-Search for supersymmetry.pdf
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1.67 MB
Format
Adobe PDF
Checksum (MD5)
300466ab8c8c196d403c1384e9d265d8
Author(s)
Taylor, Frank E.
Date Issued
September 2014
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Search for Supersymmetry in Events with Four or More Leptons in √s = 8 TeV pp Collisions with the ATLAS Detector.” Phys. Rev. D 90, no. 5 (September 2014). © 2014 CERN, for the ATLAS Collaboration
Version
Final published version
Abstract
Results from a search for supersymmetry in events with four or more leptons including electrons, muons and taus are presented. The analysis uses a data sample corresponding to 20.3 fb[superscript −1] of proton-proton collisions delivered by the Large Hadron Collider at √s = 8 TeV and recorded by the ATLAS detector. Signal regions are designed to target supersymmetric scenarios that can be either enriched in or depleted of events involving the production of a Z boson. No significant deviations are observed in data from standard model predictions and results are used to set upper limits on the event yields from processes beyond the standard model. Exclusion limits at the 95% confidence level on the masses of relevant supersymmetric particles are obtained. In R-parity-violating simplified models with decays of the lightest supersymmetric particle to electrons and muons, limits of 1350 and 750 GeV are placed on gluino and chargino masses, respectively. In R-parity-conserving simplified models with heavy neutralinos decaying to a massless lightest supersymmetric particle, heavy neutralino masses up to 620 GeV are excluded. Limits are also placed on other supersymmetric scenarios.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.90.052001
