On the production of neutral Higgs bosons in the Weinberg-Salam model with two Higgs doublets

In the Weinberg-Salam model with two Higgs doublets the production of neutral Higgses is studied at high energies. In e+e--annihilation H0(O-)h(O+) Higgs pairs can be more frequently created on Z resonance than the state Zh. At 10-20 GeV Higgs masses the yield of μ+μ-h's is about the same in both cases, but from H0h much more tau+tau-h, canti ch, banti bh can occur. GAMMA(Z→H0h) = 76 MeV around Higgs masses of 10 GeV. Production of tau+tau-,canti c, banti b pairs is preferred in the decay of a real Z into hanti ff via a virtual H0 at low Higgs masses. The energy spectra of Higgses in the decays via H0 or Z are considerably different. The predictions are sensitively dependent on mixing angles. (orig.)