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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

  • Author(s): Aad, G;
  • Abbott, B;
  • Abbott, DC;
  • Abed Abud, A;
  • Abeling, K;
  • Abhayasinghe, DK;
  • Abidi, SH;
  • Abouzeid, OS;
  • Abraham, NL;
  • Abramowicz, H;
  • Abreu, H;
  • Abulaiti, Y;
  • Acharya, BS;
  • Achkar, B;
  • Adachi, S;
  • Adam, L;
  • Adam Bourdarios, C;
  • Adamczyk, L;
  • Adamek, L;
  • Adelman, J;
  • Adersberger, M;
  • Adiguzel, A;
  • Adorni, S;
  • Adye, T;
  • Affolder, AA;
  • Afik, Y;
  • Agapopoulou, C;
  • Agaras, MN;
  • Aggarwal, A;
  • Agheorghiesei, C;
  • Aguilar-Saavedra, JA;
  • Ahmadov, F;
  • Ahmed, WS;
  • Ai, X;
  • Aielli, G;
  • Akatsuka, S;
  • Åkesson, TPA;
  • Akilli, E;
  • Akimov, AV;
  • Al Khoury, K;
  • Alberghi, GL;
  • Albert, J;
  • Alconada Verzini, MJ;
  • Alderweireldt, S;
  • Aleksa, M;
  • Aleksandrov, IN;
  • Alexa, C;
  • Alexandre, D;
  • Alexopoulos, T;
  • Alfonsi, A;
  • Alfonsi, F;
  • Alhroob, M;
  • Ali, B;
  • Alimonti, G;
  • Alison, J;
  • Alkire, SP;
  • Allaire, C;
  • Allbrooke, BMM;
  • Allen, BW;
  • Allport, PP;
  • Aloisio, A;
  • Alonso, A;
  • Alonso, F;
  • Alpigiani, C;
  • Alshehri, AA;
  • Alvarez Estevez, M;
  • Álvarez Piqueras, D;
  • Alviggi, MG;
  • Amaral Coutinho, Y;
  • Ambler, A;
  • Ambroz, L;
  • Amelung, C;
  • Amidei, D;
  • Amor Dos Santos, SP;
  • Amoroso, S;
  • Amrouche, CS;
  • An, F;
  • Anastopoulos, C;
  • Andari, N;
  • Andeen, T;
  • Anders, CF;
  • Anders, JK;
  • Andreazza, A;
  • Andrei, V;
  • Anelli, CR;
  • Angelidakis, S;
  • Angerami, A;
  • Anisenkov, AV;
  • Annovi, A;
  • Antel, C;
  • Anthony, MT;
  • Antonelli, M;
  • Antrim, DJA;
  • Anulli, F;
  • Aoki, M;
  • Aparisi Pozo, JA;
  • Aperio Bella, L;
  • Arabidze, G;
  • Araque, JP;
  • Araujo Ferraz, V
  • et al.

Published Web Location

https://doi.org/10.1103/PhysRevD.101.072001
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.

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