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Title: Search for CP violation using tt¯ events in the lepton+jets channel in pp collisions at √<i>s</i> = 13 TeV
Other Titles: Search for CP violation using $\mathrm{t\bar{t}}$ events in the lepton+jets channel in pp collisions at $\sqrt{s}$ = 13 TeV
Authors: Tumasyan, A
Adam, W
Andrejkovic, JW
Bergauer, T
Chatterjee, S
Damanakis, K
Dragicevic, M
Escalante Del Valle, A
Frühwirth, R
Jeitler, M
Krammer, N
Bruno, G
Bury, F
Caputo, C
David, P
Delaere, C
Donertas, IS
Giammanco, A
Jaffel, K
Jain, S
Lemaitre, V
Mondal, K
Teodorescu, L
Prisciandaro, J
Taliercio, A
Teklishyn, M
Tran, TT
Reid, ID
Vischia, P
Wertz, S
Alves, GA
Kyberd, P
Hensel, C
Moraes, A
Khan, A
Rebello Teles, P
Cole, JE
Coldham, K
Lechner, L
Liko, D
Mikulec, I
Paulitsch, P
Pitters, FM
Schieck, J
Schöfbeck, R
Schwarz, D
Templ, S
Waltenberger, W
Wulz, CE
Darwish, MR
De Wolf, EA
Janssen, T
Kello, T
Lelek, A
Rejeb Sfar, H
Van Mechelen, P
Van Putte, S
Van Remortel, N
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
Beghin, D
Bilin, B
Clerbaux, B
De Lentdecker, G
Favart, L
Kalsi, AK
Lee, K
Mahdavikhorrami, M
Makarenko, I
Moureaux, L
Paredes, S
Pétré, L
Popov, A
Postiau, N
Starling, E
Thomas, L
Vanden Bemden, M
Vander Velde, C
Vanlaer, P
Cornelis, T
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
Bethani, A
Keywords: CP violation;hadron-hadron scattering;top physics
Issue Date: 14-Jun-2023
Publisher: Springer Nature
Citation: Tumasyan, A. et al for the benefit of the CMS Collaboration (2023) 'Search for CP violation using tt¯ events in the lepton+jets channel in pp collisions at √<i>s</i> = 13 TeV', Journal of High Energy Physics, 2023 (6), 81, pp. 1 - 46. doi: 10.1007/JHEP06(2023)081.
Abstract: Results are presented on a search for CP violation in the production and decay of top quark-antiquark pairs in the lepton+jets channel. The search is based on data from proton-proton collisions at √s = 13 TeV, collected with the CMS detector, corresponding to an integrated luminosity of 138 fb^{−1}. Possible CP violation effects are evaluated by measuring uncorrected asymmetries in observables constructed from linearly independent four-momentum vectors of the final-state particles. The dimensionless chromoelectric dipole moment of the top quark obtained from the observed asymmetries is measured to be 0.04 ± 0.10 (stat) ± 0.07 (syst), and the asymmetries exhibit no evidence for CP-violating effects, consistent with expectations from the standard model.
Description: A preprint version of the article is available at arXiv:2205.02314v2 [hep-ex], . Comments: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at (CMS Public Pages). Report number: CMS-TOP-20-005, CERN-EP-2022-051.
ISSN: 1126-6708
Other Identifiers: ORCiD: A. Tumasyan
ORCiD: Joanne E. Cole
ORCiD: Akram Khan
ORCiD: Paul Kyberd
ORCiD: Ivan D. Reid
ORCiD: Liliana Teodorescu
Appears in Collections:Dept of Electronic and Electrical Engineering Research Papers

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