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

Asquith, L, Cerri, A, DeSanto, A, Grandi, M, Jones, S D, Kelsey, D, Lerner, G, Miano, F, Safarzadeh Samani, B, Salvatore, F, Shaw, K, Spina, M, Stevenson, T J, Suruliz, K, Sutton, M R, Tresoldi, F, Trovato, F, Vivarelli, I, Winkels, E, Winston, O J and Xiotidis, I (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). 072001-1. ISSN 2470-0010

[img] PDF - Accepted Version
Restricted to SRO admin only
Available under License Creative Commons Attribution.

Download (987kB)
[img] PDF - Published Version
Available under License Creative Commons Attribution.

Download (1MB)

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.

Item Type: Article
Keywords: hep-ex;hep-ex
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 10 Apr 2020 12:31
Last Modified: 06 May 2020 11:45
URI: http://sro.sussex.ac.uk/id/eprint/90143

View download statistics for this item

📧 Request an update