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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: | https://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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