Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s = 13 TeV with the ATLAS detector
A measurement of the top-quark mass (mt) in the tt̄ → lepton + jets channel is presented, with an experimental technique which exploits semileptonic decays of b-hadrons produced in the top-quark decay chain. The distribution of the invariant mass mℓμ of the lepton, ℓ (with ℓ = e, μ), from the W-boso...
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| Hauptverfasser: | , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 5, 2023
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| In: |
Journal of high energy physics
Year: 2023, Heft: 6, Pages: 1-56 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2023)019 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP06(2023)019
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| Verfasserangaben: | The ATLAS collaboration |
MARC
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| 245 | 1 | 0 | |a Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s = 13 TeV with the ATLAS detector |c The ATLAS collaboration |
| 246 | 3 | 3 | |a Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at square root s = 13 TeV with the ATLAS detector |
| 264 | 1 | |c June 5, 2023 | |
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| 500 | |a The ATLAS collaboration: G. Aad, M. Dunford, S. Franchino, M. Klassen, T. Mkrtchyan, P.S. Ott, A. Schoening, H-C. Schultz-Coulon, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels [ und viele weitere] | ||
| 500 | |a Gesehen am 10.11.2023 | ||
| 520 | |a A measurement of the top-quark mass (mt) in the tt̄ → lepton + jets channel is presented, with an experimental technique which exploits semileptonic decays of b-hadrons produced in the top-quark decay chain. The distribution of the invariant mass mℓμ of the lepton, ℓ (with ℓ = e, μ), from the W-boson decay and the muon, μ, originating from the b-hadron decay is reconstructed, and a binned-template profile likelihood fit is performed to extract mt. The measurement is based on data corresponding to an integrated luminosity of 36.1 fb−1 of √s = 13 TeV pp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. The measured value of the top-quark mass is mt = 174.41 ± 0.39 (stat.) ± 0.66 (syst.) ± 0.25 (recoil) GeV, where the third uncertainty arises from changing the Pythia8 parton shower gluon-recoil scheme, used in top-quark decays, to a recently developed setup. | ||
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