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Type: Journal article
Title: Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using √s = 8TeV proton-proton collision data
Other Titles: Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using root s = 8TeV proton-proton collision data
Author: The ATLAS Collaboration
Aad, G.
Citation: The Journal of High Energy Physics, 2014; 2014(9):1-51
Publisher: Springer
Issue Date: 2014
ISSN: 1029-8479
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)
Abstract: A search for squarks and gluinos in final states containing high-pT jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in s√=8 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 20.3 fb−1. Results are interpreted in a variety of simplified and specific supersymmetry-breaking models assuming that R-parity is conserved and that the lightest neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 1330 GeV for a simplified model incorporating only a gluino and the lightest neutralino. For a simplified model involving the strong production of first- and second-generation squarks, squark masses below 850 GeV (440 GeV) are excluded for a massless lightest neutralino, assuming mass degenerate (single light-flavour) squarks. In mSUGRA/CMSSM models with tan β = 30, A0 = −2m0 and μ > 0, squarks and gluinos of equal mass are excluded for masses below 1700 GeV. Additional limits are set for non-universal Higgs mass models with gaugino mediation and for simplified models involving the pair production of gluinos, each decaying to a top squark and a top quark, with the top squark decaying to a charm quark and a neutralino. These limits extend the region of supersymmetric parameter space excluded by previous searches with the ATLAS detector.
Keywords: Hadron-Hadron scattering; supersymmetry
Rights: Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
DOI: 10.1007/JHEP09(2014)176
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