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Search for heavy resonances decaying into a pair of Z bosons in the ℓℓℓℓ and ℓℓνν¯ final states using 139 fb of proton–proton collisions at √s=13 TeV with the ATLAS detector
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Search for heavy resonances decaying into a pair of Z bosons in the ℓℓℓℓ and ℓℓνν¯ final states using 139 fb of proton–proton collisions at √s=13 TeV with the ATLAS detector

G. Aad, B. Abbott, D. C. Abbott, A. Abed Abud, K. Abeling, D. K. Abhayasinghe, S. H. Abidi, O. S. AbouZeid, N. L. Abraham, H. Abramowicz, …
The European physical journal. C, Particles and fields, 卷.81(4), 332
01/04/2021
Web of Science ID: WOS:000641660400003

摘要

<p>A search for heavy resonances decaying into a pair of Z bosons leading to l+l-l ' +l '- and l+l-nu nu <overbar></mml:mover> final states, where l 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 integrated luminosity of 139 fb<mml:mo>-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.</p>

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https://doi.org/10.1140/epjc/s10052-021-09013-y檢視
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