CP-Odd Tadpole Renormalization of Higgs Scalar-Pseudoscalar Mixing

We consider an Abelian model with a CP-conserving Higgs potential spanned by two complex Higgs elds. The CP invariance of the Higgs potential is then broken explicitly beyond the Born approximation by introducing soft-CP-violating Yukawa interactions. Based on the non-renormalization theorem, we derive the consistency conditions under which a CPodd counterterm exists and, at the same time, renders the one-loop-induced mixing of a CP-even Higgs boson with a CP-odd Higgs scalar ultra-violet nite. The novel CP-odd tadpole renormalization may then be determined from the minimization constraints on the Higgs potential. Finally, we discuss the phenomenological consequences of the so-generated CP-violating scalar-pseudoscalar mixing for the electric dipole moments of neutron, electron and muon. PACS nos.: 11.30.Er, 13.10.+q, 14.80.Bn, 14.80.Cp E-mail address: [email protected]