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Статья

Aad, G.
Search for Dark Mesons Decaying to Top and Bottom Quarks in Proton-Proton Collisions at *%s=13 TeV with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.A.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.R.Didenko, M.I.Gostkin, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, A.Tropina, T.Turtuvshin, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.] // Journal of High Energy Physics [Electronic resource]. – 2024. – Vol. 2024, No. 9. – P. 005. – URL: https://doi.org/10.1007/JHEP09(2024)005. – Bibliogr.: 96.

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



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами