Würzburg 2018 – wissenschaftliches Programm
T 36.4: Vortrag
Dienstag, 20. März 2018, 17:20–17:35, Z6 - SR 1.010
CP-odd Yukawa Couplings of the 125 GeV Higgs Boson — Margarete Mühlleitner1, Rui Santos2,3,4, and •Jonas Wittbrodt5 — 1ITP, KIT, 76128 Karlsruhe, Germany — 2ISEL, Instituto Politecnico de Lisboa 1959-007 Lisboa, Portugal — 3Centro de Fisica Teorica e Computacional, Universidade de Lisboa, 1749-016 Lisboa, Portugal — 4LIP, Universidade do Minho, 4710-057 Braga, Portugal — 5DESY, Notkestraße 85, 22607 Hamburg, Germany
While precision studies of the 125 GeV Higgs boson get underway, little is still known about a possible CP-violating pseudoscalar admixture to this state. We performed a parameter scan in one of the simplest models with a CP-violating scalar sector, the Complex 2HDM (C2HDM), including the important constraint from the electric dipole moment of the electron. We show that there are still viable scenarios where the Yukawa couplings of the 125 GeV display near maximal CP-violation. Depending on the 2HDM Yukawa type, two intriguing configurations are possible. First, the CP-even and CP-off Yukawa couplings to a given fermion can be of similar size. Second, the Higgs boson can couple as a scalar to certain fermions and as a pseudoscalar to others. These possibilities can lead to interesting observable consequences.