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Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s = 13 TeV pp collisions with the ATLAS detector

Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; ... Zwalinski, L; + view all (2020) Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s = 13 TeV pp collisions with the ATLAS detector. Physical Review D , 101 (7) , Article 072001. 10.1103/PhysRevD.101.072001. Green open access

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Abstract

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √ s = 13     TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139     fb − 1 . A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV.

Type: Article
Title: Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s = 13 TeV pp collisions with the ATLAS detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevD.101.072001
Publisher version: https://doi.org/10.1103/PhysRevD.101.072001
Language: English
Additional information: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Keywords: Supersymmetric models, Superpartners, Weakly interacting massive particles
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery-pp.ucl.ac.uk/id/eprint/10105590
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