In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 6 ( 2023-06-14)
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 $$ \sqrt{s} $$ 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.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP06(2023)081
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2023
detail.hit.zdb_id:
2027350-2