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Статья

Aad, G.
Search for Pair-Produced Vectorlike Quarks Coupling to Light Quarks in the Lepton Plus Jets Final State Using 13 TeV pp Collisions with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.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.] // Physical Review D [Electronic resource]. – 2024. – Vol. 110, No. 5. – P. 052009. – URL: https://doi.org/10.1103/PhysRevD.110.052009. – Bibliogr.: 87.

A search is presented for the pair production of heavy vectorlike quarks (VLQs) that each decay into a 𝑊 boson and a light quark. This study focuses on events where one 𝑊 boson decays into leptons and the other into hadrons. The search analyzed 140  fb−1 of 𝑝⁢𝑝 collision data with √𝑠=13  TeV, recorded by the ATLAS detector from 2015 to 2018 during run 2 of the Large Hadron Collider. The final state is characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, multiple small-radius jets, and a single large-radius jet identified as originating from the hadronic decay of a boosted 𝑊 boson. With higher center-of-mass energy and integrated luminosity than in the run 1 search, and improved analysis tools, this analysis excludes VLQs (𝑄) with masses below 1530 GeV at 95% confidence level for the branching ratio ℬ⁡(𝑄→𝑊⁢𝑞)=1, an improvement of 840 GeV on the previous ATLAS limit.



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