Measurement of the tt¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at √s = 13 TeV

Tumasyan, A; Adam, W; Andrejkovic, JW; Bergauer, T; Chatterjee, S; Damanakis, K; Dragicevic, M; Escalante Del Valle, A; Hussain, PS; Jeitler, M; Krammer, N; Wertz, S; Alves, GA; Coelho, E; Hensel, C; Moraes, A; Rebello Teles, P; Aldá Júnior, WL; Alves Gallo Pereira, M; Barroso Ferreira Filho, M; Reid, ID; Brandao Malbouisson, H; Carvalho, W; Chinellato, J; Kyberd, P; Da Costa, EM; Da Silveira, GG; Khan, A; De Jesus Damiao, D; Cole, JE; Coldham, K; Lechner, L; Liko, D; Mikulec, I; Paulitsch, P; Pitters, FM; Schieck, J; Schöfbeck, R; Schwarz, D; Sonawane, M; Templ, S; Waltenberger, W; Wulz, CE; Darwish, MR; Janssen, T; Kello, T; Rejeb Sfar, H; Van Mechelen, P; Bols, ES; D'Hondt, J; De Moor, A; Delcourt, M; El Faham, H; Lowette, S; Moortgat, S; Morton, A; Müller, D; Sahasransu, AR; Tavernier, S; Van Doninck, W; Vannerom, D; Clerbaux, B; De Lentdecker, G; Favart, L; Hohov, D; Jaramillo, J; Lee, K; Mahdavikhorrami, M; Makarenko, I; Malara, A; Paredes, S; Pétré, L; Postiau, N; Thomas, L; Vanden Bemden, M; Vander Velde, C; Vanlaer, P; Dobur, D; Knolle, J; Lambrecht, L; Mestdach, G; Niedziela, M; Rendón, C; Roskas, C; Samalan, A; Skovpen, K; Tytgat, M; Van Den Bossche, N; Vermassen, B; Wezenbeek, L; Benecke, A; Bruno, G; Bury, F; Caputo, C; David, P; Delaere, C; Donertas, IS; Giammanco, A; Jaffel, K; Jain, S; Lemaitre, V; Mondal, K; Taliercio, A; Tran, TT; Vischia, P

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/27938

Title:	Measurement of the tt¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at √s = 13 TeV
Authors:	Tumasyan, A Adam, W Andrejkovic, JW Bergauer, T Chatterjee, S Damanakis, K Dragicevic, M Escalante Del Valle, A Hussain, PS Jeitler, M Krammer, N Wertz, S Alves, GA Coelho, E Hensel, C Moraes, A Rebello Teles, P Aldá Júnior, WL Alves Gallo Pereira, M Barroso Ferreira Filho, M Reid, ID Brandao Malbouisson, H Carvalho, W Chinellato, J Kyberd, P Da Costa, EM Da Silveira, GG Khan, A De Jesus Damiao, D Cole, JE Coldham, K Lechner, L Liko, D Mikulec, I Paulitsch, P Pitters, FM Schieck, J Schöfbeck, R Schwarz, D Sonawane, M Templ, S Waltenberger, W Wulz, CE Darwish, MR Janssen, T Kello, T Rejeb Sfar, H Van Mechelen, P Bols, ES D'Hondt, J De Moor, A Delcourt, M El Faham, H Lowette, S Moortgat, S Morton, A Müller, D Sahasransu, AR Tavernier, S Van Doninck, W Vannerom, D Clerbaux, B De Lentdecker, G Favart, L Hohov, D Jaramillo, J Lee, K Mahdavikhorrami, M Makarenko, I Malara, A Paredes, S Pétré, L Postiau, N Thomas, L Vanden Bemden, M Vander Velde, C Vanlaer, P Dobur, D Knolle, J Lambrecht, L Mestdach, G Niedziela, M Rendón, C Roskas, C Samalan, A Skovpen, K Tytgat, M Van Den Bossche, N Vermassen, B Wezenbeek, L Benecke, A Bruno, G Bury, F Caputo, C David, P Delaere, C Donertas, IS Giammanco, A Jaffel, K Jain, S Lemaitre, V Mondal, K Taliercio, A Tran, TT Vischia, P
Keywords:	CMS;top quark
Issue Date:	15-Sep-2023
Publisher:	Elsevier
Citation:	Tumasyan, A. et al. for the CMS Collaboration (2023) 'Measurement of the tt¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at √s = 13 TeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 846, 137703, pp. 1 - 27. doi: 10.1016/j.physletb.2023.137703.
Abstract:	Copyright © 2023 The Author(s). The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented. The analysis is performed using proton-proton collisions at s=13TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 138 fb−1. The selection is optimized for top quarks produced with large Lorentz boosts, resulting in nonisolated leptons and overlapping jets. The top quark charge asymmetry is measured for events with a tt¯ invariant mass larger than 750 GeV and corrected for detector and acceptance effects using a binned maximum likelihood fit. The measured top quark charge asymmetry of (0.42−0.69+0.64)% is in good agreement with the standard model prediction at next-to-next-to-leading order in quantum chromodynamic perturbation theory with next-to-leading-order electroweak corrections. The result is also presented for two invariant mass ranges, 750–900 and >900GeV.
Description:	Data availability: Release and preservation of data used by the CMS Collaboration as the basis for publications is guided by the CMS policy as stated in “CMS data preservation, re-use and open access policy (https://cms-docdb.cern.ch/cgi-bin/PublicDocDB/RetrieveFile?docid=6032&filename=CMSDataPolicyV1.2.pdf&version=2)”. A preprint was made available at arXiv, arXiv:2208.02751 [hep-ex]. It was replaced with the published version. All the figures and tables can be found at: https://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-21-014 (CMS Public Pages). Report number: CMS-TOP-21-014, CERN-EP-2022-155.
URI:	https://bura.brunel.ac.uk/handle/2438/27938
DOI:	https://doi.org/10.1016/j.physletb.2023.137703
ISSN:	0370-2693
Other Identifiers:	ORCID iD Joanne E. Cole https://orcid.org/0000-0001-5638-7599 ORCID iD: Akram Khan https://orcid.org/0000-0002-4597-4402 ORCID iD: Paul Kyberd https://orcid.org/0000-0002-7353-7090 ORCID iD: Ivan D. Reid https://orcid.org/0000-0002-9235-779X 137703
Appears in Collections:	Dept of Electronic and Electrical Engineering Research Papers

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