Search for new phenomena in three- or four-lepton events in ppcollisions at √s = 13TeV with the ATLAS detector


Type
Article
Change log
Authors
Aad, G 
Abbott, B 
Abbott, DC 
Abed Abud, A 
Abeling, K 
Abstract

A search with minimal model dependence for physics beyond the Standard Model in events featuring three or four leptons (3 and 4, =e,μ) is presented. The analysis aims to be sensitive to a wide range of potential new-physics theories simultaneously. This analysis uses data from pp collisions delivered by the Large Hadron Collider at a centre-of-mass energy of s=13 TeV and recorded with the ATLAS detector, corresponding to the full Run 2 dataset of 139 fb−1. The 3 and 4 phase space is divided into 22 event categories according to the number of leptons in the event, the missing transverse momentum, the invariant mass of the leptons, and the presence of leptons originating from a Z-boson candidate. These event categories are analysed independently for the presence of deviations from the Standard Model. No statistically significant deviations from the Standard Model predictions are observed. Upper limits for all signal regions are reported in terms of the visible cross-section.

Description
Keywords
hep-ex, hep-ex
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Conference Name
Journal ISSN
0370-2693
1873-2445
Volume Title
824
Publisher
Elsevier BV
Sponsorship
STFC (ST/S000712/1)