CP-ODD TADPOLE RENORMALIZATION OF HIGGS SCALAR-PSEUDOSCALAR MIXING - ART. NO. 096010

We consider an Abelian model with a CP-conserving Higgs potential span ned by two complex Higgs fields. The CP invariance of the Higgs potent ial is then broken explicitly beyond the Born approximation by introdu cing soft-CP-violating Yukawa interactions. Based on the non-renormali zation theorem, we derive the consistency conditions under which a CP- odd counterterm exists and, at the same time, renders the one-loop-ind uced mixing of a CP-even Higgs boson with a CP-odd Higgs scalar ultra- violet finite. The novel CP-odd tadpole renormalization is uniquely de termined from the minimization constraints on the Higgs potential. The main phenomenological consequences of the so-generated CP-violating s calar-pseudoscalar mixing are briefly discussed. [S0556-2821(98)03821- 1]