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Search for CP violation using t¯t events in the lepton+jets channel in pp collisions at s = 13 TeV

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 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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Tumasyan A., Adam W., Andrejkovic J.W., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Escalante Del Valle A., Frühwirth R., Jeitler M., Krammer N., Lechner L., Liko D., Mikulec I., Paulitsch P., Pitters F.M., Schieck J., Schöfbeck R., Schwarz D., Templ S., Waltenberger W., Wulz C.E., Darwish M.R., De Wolf E.A., Janssen T., Kello T., Lelek A., Rejeb Sfar H., Van Mechelen P., Van Putte S., Van Remortel N., Bols E.S., D’hond

 Fuente: Journal of High Energy Physics, 2023, 2023(6), 81

Editorial: Springer Verlag

 Fecha de publicación: 01/06/2023

Nº de páginas: 47

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP06(2023)081

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP06(2023)081