Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in root s = 8 TeV pp collisions with the ATLAS detector (vol 75, 318, 2015)



Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, Abolins, M, AbouZeid, OS, Abramowicz, H, Abreu, H, Abreu, R
et al (show 2829 more authors) (2017) Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in root s = 8 TeV pp collisions with the ATLAS detector (vol 75, 318, 2015). EUROPEAN PHYSICAL JOURNAL C, 75 (10). pp. 1-15.

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Abstract

Two searches for new phenomena in final states containing a same-flavour opposite-sign lepton (electron or muon) pair, jets, and large missing transverse momentum are presented. These searches make use of proton-proton collision data, collected during 2015 and 2016 at a centre-of-mass energy [Formula: see text] [Formula: see text] by the ATLAS detector at the large hadron collider, which correspond to an integrated luminosity of [Formula: see text]. Both searches target the pair production of supersymmetric particles, squarks or gluinos, which decay to final states containing a same-flavour opposite-sign lepton pair via one of two mechanisms: a leptonically decaying <i>Z</i> boson in the final state, leading to a peak in the dilepton invariant-mass distribution around the <i>Z</i> boson mass; and decays of neutralinos (e.g. [Formula: see text]), yielding a kinematic endpoint in the dilepton invariant-mass spectrum. The data are found to be consistent with the Standard Model expectation. Results are interpreted in simplified models of gluino-pair (squark-pair) production, and provide sensitivity to gluinos (squarks) with masses as large as 1.70 [Formula: see text] (980 [Formula: see text]).

Item Type: Article
Additional Information: 46 pages plus author list (63 pages total), 15 figures, 11 tables, published in EPJC. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2016-05
Uncontrolled Keywords: ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 12 Feb 2018 10:15
Last Modified: 19 Jan 2023 06:41
DOI: 10.1140/epjc/s10052-015-3661-9
Open Access URL: https://doi.org/10.1140/epjc/s10052-017-4700-5
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3017808