Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb⁻¹ of √s = 13 TeV pp collisions with the ATLAS detector
Date
2023
Authors
Aad, G.
Abbott, B.
Abbott, D.C.
Abud, A.A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
Aboulhorma, A.
Abramowicz, H.
Abreu, H.
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Journal article
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European Physical Journal C, 2023; 83(6):515-1-515-52
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Abstract
Searches for new phenomena inspired by supersymmetry in final states containing an e⁺e‾ or μ⁺ μ‾ pair, jets, and missing transverse momentum are presented. These searches make use of proton–proton collision data with an integrated luminosity of 139 fb‾¹, collected during 2015– 2018 at a centre-of-mass energy √ s = 13 TeV by the ATLAS detector at the Large Hadron Collider. Two searches target the pair production of charginos and neutralinos. One uses the recursive-jigsaw reconstruction technique to follow up on excesses observed in 36.1 fb‾¹ of data, and the other uses conventional event variables. The third search targets pair production of coloured supersymmetric particles (squarks or gluinos) decaying through the next-to-lightest neutralino (˜χ‾⁰₂ ) via a slepton (˜l) or Z boson into l⁺ l⁻ ˜χ⁰₁, resulting in a kinematic endpoint or peak in the dilepton invariant mass spectrum. The data are found to be consistent with the Standard Model expectations. Results are interpreted using simplified models and exclude masses up to 900 GeV for electroweakinos, 1550 GeV for squarks, and 2250 GeV for gluinos.
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© CERN for the benefit of the ATLAS collaboration 2023. This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecomm ons.org/licenses/by/4.0/.