Электронный каталог

Статья

Aad, G.
Search for Pair-Production of Vector-Like Quarks in Lepton+Jets Final States Containing at Least One b-Tagged Jet Using the Run 2 Data from the ATLAS Experiment / 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, T.Turtuvshin, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.] // Physics Letters B [Electronic resource]. – 2024. – Vol. 854. – P. 138743. – URL: https://doi.org/10.1016/j.physletb.2024.138743. – Bibliogr.: 92.

A search is presented for the pair-production of heavy vector-like quarks in the lepton+jets final state using 140 fb*−*1 of proton–proton collisions at *%𝑠 = 13 TeV collected with the ATLAS detector. The search is optimised for vector-like top-quarks (𝑇 ) that decay into a 𝑊 boson and a 𝑏-quark, with one 𝑊 boson decaying leptonically and the other hadronically. Other vector-like quark flavours and decay modes are also considered. Events are selected with one high transverse-momentum electron or muon, large missing transverse momentum, a large- radius jet identified as a 𝑊 boson, and multiple small-radius jets, at least one of which is 𝑏-tagged. Vector-like 𝑇 -quarks with 100% branching ratio to 𝑊 𝑏 are excluded at 95% CL for masses below 1700 GeV. These limits are also applied to vector-like 𝑌 -quarks, which decay exclusively into a 𝑊 boson and a 𝑏-quark. Isospin singlets with B(𝑇 *> 𝑊 𝑏 ∶ 𝐻𝑡 ∶ 𝑍𝑡) = 1∕2 ∶ 1∕4 ∶ 1∕4 are excluded for masses below 1360 GeV



Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
ОИЯИ = ОИЯИ (JINR)2024