Universität zu Köln

Bahl, Henning, Fuchs, Elina ORCID: 0000-0002-0345-2948, Heinemeyer, Sven, Katzy, Judith, Menen, Marco, Peters, Krisztian, Saimpert, Matthias and Weiglein, Georg (2022). Constraining the CP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis. Eur. Phys. J. C, 82 (7). NEW YORK: SPRINGER. ISSN 1434-6052

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Abstract

CP 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 CP structure of the Higgs Yukawa couplings. Starting with simple effective models featuring CP violation in a singleHiggs-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 CP 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 -> tau(+) pi(-) 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bahl, Henning UNSPECIFIED UNSPECIFIED UNSPECIFIED Fuchs, Elina UNSPECIFIED orcid.org/0000-0002-0345-2948 UNSPECIFIED Heinemeyer, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Katzy, Judith UNSPECIFIED UNSPECIFIED UNSPECIFIED Menen, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED Peters, Krisztian UNSPECIFIED UNSPECIFIED UNSPECIFIED Saimpert, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Weiglein, Georg UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-693493
DOI:	10.1140/epjc/s10052-022-10528-1
Journal or Publication Title:	Eur. Phys. J. C
Volume:	82
Number:	7
Date:	2022
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1434-6052
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VIOLATION Multiple languages Physics, Particles & Fields Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69349