TY  - JOUR
AU  - Bahl, Henning
AU  - Fuchs, Elina
AU  - Heinemeyer, Sven
AU  - Katzy, Judith
AU  - Menen, Marco
AU  - Peters, Krisztian
AU  - Saimpert, Matthias
AU  - Weiglein, Georg
TI  - Constraining the <i>C</i><i>P</i> structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis
JO  - The European physical journal / C
VL  - 82
IS  - 7
SN  - 1434-6044
CY  - Heidelberg
PB  - Springer
M1  - PUBDB-2022-04194
M1  - DESY-22-033
M1  - arXiv:2202.11753
M1  - CERN-TH-2021-231
M1  - EFI-22-1
M1  - IFT-UAM/CSIC-21-148
SP  - 604
PY  - 2022
N1  - 40 pages + references, 18 figures
AB  - <i>C</i><i>P</i> violation in the Higgs couplings to fermions is an intriguing, but not yet extensively explored possibility. We use inclusive and differential LHC Higgs boson measurements to fit the <i>C</i><i>P</i> structure of the Higgs Yukawa couplings. Starting with simple effective models featuring <i>C</i><i>P</i> violation in a single Higgs–fermion coupling, we probe well-motivated models with up to nine free parameters. We also investigate the complementarity of LHC constraints with the electron electric dipole moment bound, taking into account the possibility of a modified electron Yukawa coupling, and assess to which extent <i>C</i><i>P</i> violation in the Higgs–fermion couplings can contribute to the observed baryon asymmetry of the universe. Even after including the recent analysis of angular correlations in H→ τ<sup>+</sup>τ<sup>−</sup> decays, we find that a complex tau Yukawa coupling alone may be able to account for the observed baryon asymmetry, but with large uncertainties in the baryogenesis calculation. A combination of complex top and bottom quark Yukawa couplings yields a result four times larger than the sum of their separate contributions, but remains insufficient to account for the observed baryon asymmetry.
KW  - coupling: Yukawa (INSPIRE)
KW  - CP: violation (INSPIRE)
KW  - baryon: asymmetry (INSPIRE)
KW  - electron: electric moment (INSPIRE)
KW  - coupling: Higgs (INSPIRE)
KW  - interpretation of experiments: CERN LHC Coll (INSPIRE)
KW  - baryogenesis (INSPIRE)
KW  - structure (INSPIRE)
KW  - angular correlation (INSPIRE)
KW  - quark (INSPIRE)
KW  - Higgs particle (INSPIRE)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000822615300001
DO  - DOI:10.1140/epjc/s10052-022-10528-1
UR  - https://bib-pubdb1.desy.de/record/481134
ER  -