Constraining the CP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis

Understand

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 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 CP violation in the Higgs-fermion couplings can contribute to the observed baryon asymmetry of the universe.