Электронный каталог

Статья

Aad, G.
Search for a New Pseudoscalar Decaying into a Pair of Muons in Events with a Top-Quark Pair 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, 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, S.Turchikhin, T.Turtuvshin, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, N.Huseynov, Y.Kulchitsky, [ATLAS Collab.] // Physical Review D [Electronic resource]. – 2023. – Vol.108, No.9. – P.092007. – URL: https://doi.org/10.1103/PhysRevD.108.092007. – Bibliogr.:76.

A search for a new pseudoscalar a-boson produced in events with a top-quark pair, where the a-boson decays into a pair of muons, is performed using √s=13  TeV pp collision data collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139  fb−1. The search targets the final state where only one top quark decays to an electron or muon, resulting in a signature with three leptons eμμ and μμμ. No significant excess of events above the Standard Model expectation is observed and upper limits are set on two signal models: pp→t¯ta and pp→t¯t with t→H±b, H±→W±a, where a→μμ, in the mass ranges 15  GeV


ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами