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Title

Combination of inclusive and differential t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ charge asymmetry measurements using ATLAS and CMS data at s = 7 and 8 TeV

CollaborationWith : Akilli, Ece / Ancu, Lucian Stefan / Benoit, Mathieu / Calace, Noemi / Clark, Allan Geoffrey / Coccaro, Andrea / Della Volpe, Domenico / Di Bello, Francesco / Dubreuil, Arnaud / Ferrere, Didier / Gadatsch, Stefan / Golling, Tobias / Gonzalez Sevilla, Sergio / Iacobucci, Giuseppe / Jansky, Roland / Katre, Akshay / Khoo, Teng Jian / Kiehn, Moritz / Lanfermann, Marie Christine / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Nessi, Marzio / Pandini, Carlo / Paolozzi, Lorenzo / Schramm, Steven / Sfyrla, Anna / Valente, Marco / Wu, Xin
Published in Journal of High Energy Physics. 2018, vol. 1804, p. 033
Collection Open Access - SCOAP3
Abstract This paper presents combinations of inclusive and differential measurements of the charge asymmetry ( A C ) in top quark pair t t ¯ $$ \left(\mathrm{t}\overline{\mathrm{t}}\right) $$ events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The data correspond to integrated luminosities of about 5 and 20 fb −1 for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are A C CHC7 = 0.005 ± 0.007 (stat) ± 0.006(syst) at 7 TeV and A C CHC8 = 0.0055 ± 0.0023 (stat) ± 0.0025 (syst) at 8 TeV. These values, as well as the combination of A C measurements as a function of the invariant mass of the t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ system at 8 TeV, are consistent with the respective standard model predictions.
Keywords Hadron-Hadron scattering (experiments)Top physics
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arXiv: 1709.05327
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ATLAS COLLABORATION. Combination of inclusive and differential t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ charge asymmetry measurements using ATLAS and CMS data at s = 7 and 8 TeV. In: Journal of High Energy Physics, 2018, vol. 1804, p. 033. https://archive-ouverte.unige.ch/unige:104831

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Deposited on : 2018-06-01

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