Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/12027
Title: | Measurement of Top-Quark Pair Production in Association With Charm Quarks in Proton-Proton Collisions at √s=13 Tev With the Atlas Detector |
Authors: | Aad, G. Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N. J. Zwalinski, L. |
Keywords: | [No Keyword Available] |
Publisher: | Elsevier |
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 t (t) over bar >= 2c and t (t) over bar + 1c production are measured to be 1.28(- 0.24)(+0.27) pb and 6.4(-0.9)(+1.0) pb, respectively. The measurements are primarily limited by uncertainties in the modeling of inclusive t (t) over bar and t (t) over bar + b (b) over bar production, in the calibration of the flavor-tagging algorithm, and by data statistics. Cross-section predictions from various t (t) over bar 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 t (t) over bar decay products and the jet multiplicity, the cross-section ratios of t (t) over bar + >= 2c and t (t) over bar + 1c to total t (t) over bar + jets production are determined to be (1.23 +/- 0.25)% and (8.8 +/- 1.3)%. |
Description: | McKee, Shawn/0000-0002-4551-4502; /0000-0001-5765-1750; Soto, Orlando/0000-0002-8613-0310; Herrmann, Linda/0000-0002-1857-6310; Petersen, Troels/0000-0003-0221-3037; Zanzottera, Riccardo/0009-0006-5900-2539; Etzion, Erez/0000-0001-6871-7794; Zivkovic, Lidija/0000-0003-4236-8930; Haley, Joseph/0000-0002-6938-7405; Aad, Georges/0000-0002-6665-4934; Giuli, Francesco/0000-0002-8506-274X; Kretzschmar, Jan/0000-0002-8515-1355; Fiorini, Luca/0000-0002-5070-2735; Camplani, Alessandra/0000-0002-6386-9788; Carmignani, Joseph (Joe)/0000-0002-1705-1061; Abicht, Nils Julius/0000-0001-5763-2760; Teixeira-Dias, Pedro/0000-0001-9977-3836; Aboulhorma, Asmaa/0000-0002-9987-2292; Pintucci, Laura/0000-0001-9842-9830; D'Auria, Saverio/0000-0003-3393-6318; Gwilliam, Carl/0000-0002-9401-5304; Mlinarevic, Marin/0000-0003-3587-646X; Abdelhameed, Sara/0000-0002-0287-5869; Mitsou, Vasiliki A./0000-0002-1533-8886; Nasella, Laura/0000-0002-4871-784X; Abramowicz, Halina/0000-0001-5329-6640; Ragusa, Francesco/0000-0002-4064-0489; de la Torre Perez, Hector/0000-0002-4516-5269; Sala, Alessandro/0000-0003-0824-7326; Stanislaus, Beojan/0000-0001-9007-7658; Calafiura, Paolo/0000-0002-1692-1678; Konstantinidis, Nikolaos/0000-0002-4140-6360; Abbott, Braden/0000-0002-5888-2734; Gonnella, Francesco/0000-0003-0885-1654; Rompotis, Nikolaos/0000-0003-2577-1875; Carbone, Antonio/0000-0002-4117-3800; Williams, Scott/0000-0001-7860-8962; Butterworth, Jonathan/0000-0002-5905-5394; Mazzeo, Elena/0000-0002-8406-0195 |
URI: | https://doi.org/10.1016/j.physletb.2024.139177 |
ISSN: | 0370-2693 1873-2445 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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