Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of s√=13 TeV pp collision data with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2868 more authors) (2017) Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of s√=13 TeV pp collision data with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2017 (9).

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Abstract

A search for strongly produced supersymmetric particles using signatures involving multiple energetic jets and either two isolated same-sign leptons (e or μ), or at least three isolated leptons, is presented. The analysis relies on the identification of b-jets and high missing transverse momentum to achieve good sensitivity. A data sample of proton-proton collisions at s√=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to a total integrated luminosity of 36.1 fb−1, is used for the search. No significant excess over the Standard Model prediction is observed. The results are interpreted in several simplified supersymmetric models featuring R-parity conservation or R-parity violation, extending the exclusion limits from previous searches. In models considering gluino pair production, gluino masses are excluded up to 1.87 TeV at 95% confidence level. When bottom squarks are pair-produced and decay to a chargino and a top quark, models with bottom squark masses below 700 GeV and light neutralinos are excluded at 95% confidence level. In addition, model-independent limits are set on a possible contribution of new phenomena to the signal region yields.

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Supersymmetry
Depositing User: Symplectic Admin
Date Deposited: 18 Oct 2017 08:40
Last Modified: 08 May 2021 08:47
DOI: 10.1007/JHEP09(2017)084
Open Access URL: https://doi.org/10.1007/JHEP09(2017)084
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3010358