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Evidence for the production of three massive vector bosons with the ATLAS detector

Aad, G; Abbott, B; Abbott, DC; Abdinov, O; Abed Abud, A; Abeling, K; Abhayasinghe, DK; ... Araujo Pereira, R; + view all (2019) Evidence for the production of three massive vector bosons with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics , 798 , Article 134913. 10.1016/j.physletb.2019.134913. (In press). Green open access

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Abstract

A search for the production of three massive vector bosons in proton–proton collisions is performed using data at √s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in the years 2015–2017, corresponding to an integrated luminosity of 79.8 fb−1. Events with two same-sign leptons (electrons or muons) and at least two reconstructed jets are selected to search for WWW → ννqq. Events with three leptons without any same-flavour opposite-sign lepton pairs are used to search for WWW → ννν, while events with three leptons and at least one same-flavour opposite-sign lepton pair and one or more reconstructed jets are used to search for WWZ → νqq. Finally, events with four leptons are analysed to search for WWZ → νν and WZZ → qq. Evidence for the joint production of three massive vector bosons is observed with a significance of 4.1 standard deviations, where the expectation is 3.1 standard deviations.

Type: Article
Title: Evidence for the production of three massive vector bosons with the ATLAS detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.physletb.2019.134913
Publisher version: https://doi.org/10.1016/j.physletb.2019.134913
Language: English
Additional information: © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
UCL classification: UCL > Provost and Vice Provost Offices
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.ucl.ac.uk/id/eprint/10082850
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