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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

2016/01/31 by G. Aad, ATLAS Collaboration, B. Abbott +98 · 22 citations
Physics and Astronomy · #Atlas (anatomy) #Atlas detector #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #R-parity #Standard Model (mathematical formulation) #Supersymmetry #Top quark #hep-ex

paper · pdf · doi:10.1007/jhep06(2016)067

published in Journal of High Energy Physics 2016(6) (Springer Nature) · 29 pages (+ author list + cover page - 46 pages in total), 10 figures, 6 tables. Submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2015-05/

openalex publication_date 2016/06/01 · arxiv created 2016/06/22 · arxiv updated 2016/06/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A search for the pair production of top squarks, each with R-parity-violating decays into two Standard Model quarks, is performed using 17.4 fb -1 of s = 8 TeV proton-proton collision data recorded by the ATLAS experiment at the LHC. Each top squark is assumed to decay to a b-and an s-quark, leading to four quarks in the final state. Background discrimination is achieved with the use of b-tagging and selections on the mass and substructure of large-radius jets, providing sensitivity to top squark masses as low as 100 GeV. No evidence of an excess beyond the Standard Model background prediction is observed and top squarks decaying to bs are excluded for top squark masses in the range 100 m t 315 GeV at 95% confidence level.

Citations