Measurement of single top-quark production in the s-channel in proton-proton collisions at √s = 13 TeV with the ATLAS detector
A measurement of single top-quark production in the s-channel is performed in proton-proton collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The dataset corresponds to an integrated luminosity of 139 fb−1. The analysis is performed on events...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
27 June 2023
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| In: |
Journal of high energy physics
Year: 2023, Issue: 6, Pages: 1-47 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2023)191 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP06(2023)191 |
| Author Notes: | the ATLAS Collaboration: G. Aad, F. Bartels, M.M. Czurylo, S.J. Dittmeier, M. Dunford, S. Franchino, M. Klassen, A. Krishnan, T. Mkrtchyan, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue, J. Zinßer ... [und 2888 weitere Personen] |
| Summary: | A measurement of single top-quark production in the s-channel is performed in proton-proton collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The dataset corresponds to an integrated luminosity of 139 fb−1. The analysis is performed on events with an electron or muon, missing transverse momentum and exactly two b-tagged jets in the final state. A discriminant based on matrix element calculations is used to separate single-top-quark s-channel events from the main background contributions, which are top-quark pair production and W-boson production in association with jets. The observed (expected) signal significance over the background-only hypothesis is 3.3 (3.9) standard deviations, and the measured cross-section isσ = 8.2^+3.5 −2.9 pb, consistent with the Standard Model prediction of σSM = 10.32^+0.40 −0.36 pb. |
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| Item Description: | Gesehen am 18.04.2024 |
| Physical Description: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2023)191 |