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| Titel: | Measurement of top-quark pair production in association with charm quarks in proton-proton collisions at √s=13 TeV with the ATLAS detector |
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| Mitwirkende: | Aad, Georges [VerfasserIn]  |
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| | Ackermann, Anke [VerfasserIn] |
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| | Baltes, Lisa Marie [VerfasserIn] |
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| | Bartels, Falk [VerfasserIn] |
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| | Dittmeier, Sebastian [VerfasserIn] |
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| | Dunford, Monica [VerfasserIn] |
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| | Franchino, Silvia [VerfasserIn] |
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| | Junkermann, Thomas [VerfasserIn] |
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| | Mkrtchyan, Tigran [VerfasserIn] |
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| | Ott, Philipp [VerfasserIn] |
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| | Rassloff, Damir Fabrice [VerfasserIn] |
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| | Sanfilippo, Lorenzo [VerfasserIn] |
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| | Schöning, André [VerfasserIn] |
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| | Schultz-Coulon, Hans-Christian [VerfasserIn] |
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| | Sothilingam, Varsiha [VerfasserIn] |
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| | Stamen, Rainer [VerfasserIn] |
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| | Starovoitov, Pavel [VerfasserIn] |
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| | Vigani, Luigi [VerfasserIn] |
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| | Weber, Sebastian [VerfasserIn] |
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| | Wessels, Martin [VerfasserIn] |
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| | Zinßer, Joachim [VerfasserIn] |
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| Körperschaft: | ATLAS Collaboration [VerfasserIn] |
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| Verf.angabe: | the ATLAS Collaboration |
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| E-Jahr: | 2025 |
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| Jahr: | 4 December 2024 |
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| Umfang: | 28 S. |
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| Illustrationen: | Illustrationen |
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| Fussnoten: | The ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, L. Sanfilippo, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S. M. Weber, M. Wessels, J. Zinsser [und 2901 weitere] ; Gesehen am 03.07.2025 |
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| Titel Quelle: | Enthalten in: Physics letters |
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| Ort Quelle: | Amsterdam : North-Holland Publ., 1967 |
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| Jahr Quelle: | 2025 |
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| Band/Heft Quelle: | 860(2025) vom: Jan., Artikel-ID 139177, Seite 1-28 |
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| ISSN Quelle: | 1873-2445 |
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| Abstract: | Inclusive cross-sections for top-quark pair production in association with charm quarks are measured with proton-proton collision data at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 140 fb−1, collected with the ATLAS experiment at the LHC between 2015 and 2018. The measurements are performed by requiring one or two charged leptons (electrons and muons), two b-tagged jets, and at least one additional jet in the final state. A custom flavor-tagging algorithm is employed for the simultaneous identification of b-jets and c-jets. In a fiducial phase space that replicates the acceptance of the ATLAS detector, the cross-sections for tt¯+≥2c and tt¯+1c production are measured to be 1.28−0.24+0.27pb and 6.4−0.9+1.0pb, respectively. The measurements are primarily limited by uncertainties in the modeling of inclusive tt¯ and tt¯+bb¯ production, in the calibration of the flavor-tagging algorithm, and by data statistics. Cross-section predictions from various tt¯ simulations are largely consistent with the measured cross-section values, though all underpredict the observed values by 0.5 to 2.0 standard deviations. In a phase-space volume without requirements on the tt¯ decay products and the jet multiplicity, the cross-section ratios of tt¯+≥2c and tt¯+1c to total tt¯+jets production are determined to be (1.23±0.25)% and (8.8±1.3)%. |
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| DOI: | doi:10.1016/j.physletb.2024.139177 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: https://doi.org/10.1016/j.physletb.2024.139177 |
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| | kostenfrei: Volltext: https://www.sciencedirect.com/science/article/pii/S0370269324007354 |
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| | DOI: https://doi.org/10.1016/j.physletb.2024.139177 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1929692846 |
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| Verknüpfungen: | → Zeitschrift |
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Measurement of top-quark pair production in association with charm quarks in proton-proton collisions at √s=13 TeV with the ATLAS detector / Aad, Georges [VerfasserIn]; 4 December 2024 (Online-Ressource)
