2017/08/31 by M. Aaboud, ATLAS Collaboration, G. Aad +98 · 3 citations
Physics and Astronomy · #Atlas (anatomy) #Atlas detector #Detector #Economics #Electron #Geology #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Nuclear physics #Pair production #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #hep-ex
paper · pdf · doi:10.1140/epjc/s10052-017-5445-x
published as Eur. Phys. J. C77 (2017) 898 · 47 pages plus author list + cover pages (64 pages total), 11 figures, 19 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2016-17/
openalex created_date 2017/08/31 · openalex publication_date 2017/12/01 · arxiv created 2018/02/01 · arxiv updated 2018/02/02 · openalex updated_date 2026/08/05
The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb -1 of integrated luminosity from proton-proton collisions at s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark t and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay t b 1 into a b-quark and the lightest chargino with 1 W 0 1 , the decay t t 0 1 into an on-shell top quark and the lightest neutralino, the three-body decay t bW 0 1 and the four-body decay t b 0 1 . No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the t and 0 1 masses. The results exclude at 95% confidence level t masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches.