Search for heavy resonances decaying into a pair of <i>Z</i> bosons in the l<SUP>+</SUP>l<SUP>-</SUP>l′<SUP>+</SUP>l′<SUP>-</SUP> and l<SUP>+</SUP>l<SUP>-</SUP>ν(ν)over-bar final states using 139 fb<SUP>-1</SUP> of proton-proton collisions at √s=13TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2916 more authors) (2021) Search for heavy resonances decaying into a pair of <i>Z</i> bosons in the l<SUP>+</SUP>l<SUP>-</SUP>l′<SUP>+</SUP>l′<SUP>-</SUP> and l<SUP>+</SUP>l<SUP>-</SUP>ν(ν)over-bar final states using 139 fb<SUP>-1</SUP> of proton-proton collisions at √s=13TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 81 (4). 332-.

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Abstract

A search for heavy resonances decaying into a pair of $Z$ bosons leading to $\ell^+\ell^-\ell'^+\ell'^-$ and $\ell^+\ell^-\nu\bar\nu$ final states, where $\ell$ 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 TeV collected from 2015 to 2018 that corresponds to the full 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.

Item Type: Article
Additional Information: 58 pages in total, author list starting page 42, 10 figures, 6 tables, published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-09
Uncontrolled Keywords: hep-ex, hep-ex
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 11 May 2021 07:45
Last Modified: 08 Oct 2023 15:18
DOI: 10.1140/epjc/s10052-021-09013-y
Open Access URL: https://link.springer.com/article/10.1140%2Fepjc%2...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3122202