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.

Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. j., et al. (2024). Search for pair-produced vectorlike quarks coupling to light quarks in the lepton plus jets final state using 13 TeV 𝑝⁢𝑝 collisions with the ATLAS detector. PHYSICAL REVIEW D, 110(5), 052009-1-052009-27 [10.1103/physrevd.110.052009].

Search for pair-produced vectorlike quarks coupling to light quarks in the lepton plus jets final state using 13 TeV 𝑝⁢𝑝 collisions with the ATLAS detector

Alfonsi, F.;Ballabene, E.;Bellagamba, L.;Bianco, G.;Boscherini, D.;Bruni, A.;Carratta, G.;Corchia, F.  A.;Cremonini, D.;De Castro, S.;Fabbri, F.;Fabbri, L.;Franchini, M.;Gabrielli, A.;Giacobbe, B.;Lasagni Manghi, F.;Levrini, G.;Nechaeva, S.;Polini, A.;Rinaldi, L.;Romano, M.;Sanzani, E.;Sbarra, C.;Sbrizzi, A.;Semprini-Cesari, N.;Sioli, M.;Todome, K.;Valentinetti, S.;Villa, M.;Vittori, C.;Vivarelli, I.;Zoccoli, A.;
2024

Abstract

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.
2024
Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. j., et al. (2024). Search for pair-produced vectorlike quarks coupling to light quarks in the lepton plus jets final state using 13 TeV ��⁢�� collisions with the ATLAS detector. PHYSICAL REVIEW D, 110(5), 052009-1-052009-27 [10.1103/physrevd.110.052009].
Aad, G.; Aakvaag, E.; Abbott, B.; Abdelhameed, S.; Abeling, K.; Abicht, N.  j.; Abidi, S.  h.; Aboelela, M.; Aboulhorma, A.; Abramowicz, H.; Abreu, H....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1010970
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