Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/103895
Title: Search for heavy resonances decaying into a pair of Z bosons in the ℓ+ℓ-ℓ′ +ℓ′ - and ℓ+ℓ-νν¯ final states using 139 fb - 1 of proton–proton collisions at √s=13 TeV with the ATLAS detector
Authors: Fiolhais, M. C. N. 
Veloso, F. 
Gonçalo, R. 
Wolters, H. 
ATLAS Collaboration
Issue Date: Apr-2021
Publisher: Springer Nature
Serial title, monograph or event: European Physical Journal C
Volume: 81
Issue: 4
Abstract: A search for heavy resonances decaying into a pair of Z bosons leading to + − + − and + − ν¯ν final states, where stands for either an electron or a muon, is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeVcollected from 2015 to 2018 that corresponds to the integrated luminosity of 139 fb−1 recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. Different mass ranges spanning 200 GeV to 2000 GeV for the hypothetical resonances are considered, depending on the final state and model. In the absence of a significant observed excess, the results are interpreted as upper limits on the production cross section of a spin-0 or spin-2 resonance. The upper limits for the spin-0 resonance are translated to exclusion contours in the context of Type-I and Type-II two-Higgs-doublet models, and the limits for the spin-2 resonance are used to constrain the Randall–Sundrum model with an extra dimension giving rise to spin-2 graviton excitations.
URI: http://hdl.handle.net/10316/103895
DOI: 10.1140/epjc/s10052-021-09013-y
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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