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Search for CP violating top quark couplings in pp collisions at s = 13 TeV

Abstract: Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb-1. The search uses two observables, O1 and 3, which are Lorentz scalars. The observable O1 is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while O3 consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the op quark. The results are consistent with the expectation from the standard model.

 Autoría: Tumasyan A., Adam W., Bergauer T., Dragicevic M., Escalante Del Valle A., Frühwirth R., Jeitler M., Krammer N., Lechner L., Liko D., Mikulec I., Pitters F.M., Schieck J., Schöfbeck R., Spanring M., Templ S., Waltenberger W., Wulz C.E., Zarucki M., Darwish M.R., De Wolf E.A., Janssen T., Kello T., Lelek A., Pieters M., Rejeb Sfar H., Van Mechelen P., Van Putte S., Van Remortel N., Blekman F., Bols E.S., D'hondt J., De Clercq J., Lo

 Fuente: Journal of High Energy Physics, 2023, 2023(7), 23

 Editorial: Springer Verlag

 Fecha de publicación: 01/07/2023

 Nº de páginas: 45

 Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP07(2023)023

 ISSN: 1126-6708,1029-8479

 Url de la publicación: https://doi.org/10.1007/JHEP07(2023)023