2014/05/31 by ATLAS Collaboration, G. Aad, B. Abbott +98 · 3 citations
Physics and Astronomy · #Chargino #Electron #Gluino #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Minimal Supersymmetric Standard Model #Muon #Neutralino #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #R-parity #Supersymmetry #hep-ex
paper · pdf · doi:10.1103/physrevd.90.052001
published as Phys. Rev. D. 90, 052001 (2014) · 21 pages plus author list+cover page (34 pages total), 11 figures, 10 tables, submitted to Phys. Rev. D. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2013-13/
openalex publication_date 2014/09/04 · arxiv created 2014/09/15 · arxiv updated 2014/12/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
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^\ensuremath-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.