Search for supersymmetry at √(s)=13 s = 13 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector

2016/02/29 by ATLAS Collaboration, G. Aad, B. Abbott +98 · 143 citations
Computer Science · Physics and Astronomy · #Atlas (anatomy) #Atlas detector #Biology #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #Electron #Large Hadron Collider #Lepton #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Sign (mathematics) #Supersymmetry #hep-ex

paper · pdf · doi:10.1140/epjc/s10052-016-4095-8

published in The European Physical Journal C 76(5), 259 (Springer Science+Business Media) · 20 pages plus author list + cover pages (38 pages total), 4 figures, 6 tables. Submitted to EPJC. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2015-09/

openalex publication_date 2016/05/01 · arxiv created 2016/05/16 · arxiv updated 2017/08/30 · openalex created_date 2019/02/21 · openalex updated_date 2026/08/06

Abstract

A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons (e or ) with the same electric charge or at least three isolated leptons. The search also utilises b-tagged jets, missing transverse momentum and other observables to extend its sensitivity. The analysis uses a data sample of proton-proton collisions at s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 corresponding to a total integrated luminosity of 3.2 fb -1 . No significant excess over the Standard Model expectation is observed. The results are interpreted in several simplified supersymmetric models and extend the exclusion limits from previous searches. In the context of exclusive production and simplified decay modes, gluino masses are excluded at 95 % confidence level up to 1.1-1.3 TeV for light neutralinos (depending on the decay channel), and bottom squark masses are also excluded up to 540 GeV. In the former scenarios, neutralino masses are also excluded up to 550-850 GeV for gluino masses around 1 TeV.

Citations

• Supersymmetry production cross sections in pp collisions at sqrts = 7 TeV
• Supergauge transformations in four dimensions
• Event generation with SHERPA 1.1
• Presentation of search results: theCLstechnique
• Is the neutrino a goldstone particle?
• The anti-ktjet clustering algorithm
• HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)
• Supersymmetric relics from the big bang

Cited by

• Electroweakino searches at the HL-LHC in the baryon number violating MSSM
• Search for pair production of gluinos decaying via stop and sbottom in events withb-jets and large missing transverse momentum inppcollisions ats=13 TeVwith the ATLAS detector
• A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment
• Complementarity of resonant scalar, vector-like quark and superpartner searches in elucidating new phenomena
• Probing the Weinberg operator at colliders
• LHC signals of radiatively-induced neutrino masses and implications for the Zee–Babu model
• Measurement of W^± Z production cross sections and gauge boson polarisation in pp collisions at √(s) = 13~\text TeV with the ATLAS detector
• Search for new phenomena with multiple charged leptons in proton–proton collisions at √(s)= 13 s = 13 \text TeV TeV
• A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in s = 8 √(s)=8 TeV proton-proton collisions