Search for dark mesons decaying to top and bottom quarks in proton-proton collisions at √s=13 TeV with the ATLAS detector



Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H
et al (show 2890 more authors) (2024) Search for dark mesons decaying to top and bottom quarks in proton-proton collisions at √s=13 TeV with the ATLAS detector JOURNAL OF HIGH ENERGY PHYSICS, 2024 (9). 5-. ISSN 1126-6708, 1029-8479

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Abstract

A search for dark mesons originating from strongly-coupled, SU(2) dark flavor symmetry conserving models and decaying gaugephobically to pure Standard Model final states containing top and bottom quarks is presented. The search targets fully hadronic final states and final states with exactly one electron or muon and multiple jets. The analyzed data sample corresponds to an integrated luminosity of 140 fb<sup>−1</sup> of proton-proton collisions collected at s = 13 TeV with the ATLAS detector at the Large Hadron Collider. No significant excess over the Standard Model background expectation is observed and the results are used to set the first direct constraints on this type of model. The two-dimensional signal space of dark pion masses mπ<inf>D</inf> and dark rho-meson masses mρ<inf>D</inf> is scanned. For mπ<inf>D</inf>/mρ<inf>D</inf> = 0.45, dark pions with masses mπ<inf>D</inf>< 940 GeV are excluded at the 95% CL, while for mπ<inf>D</inf>/mρ<inf>D</inf> = 0.25 masses mπ<inf>D</inf>< 740 GeV are excluded.

Item Type: Article
Uncontrolled Keywords: Beyond Standard Model, Dark Matter, Exotics, Hadron-Hadron Scattering
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 19 Sep 2024 10:13
Last Modified: 23 May 2026 09:17
DOI: 10.1007/JHEP09(2024)005
Open Access URL: https://link.springer.com/article/10.1007/JHEP09(2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3184596
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