The HiggsphotonZ boson coupling revisited
Abstract
We analyze the coupling of CPeven and CPodd Higgs bosons to a photon and a Z boson in extensions of the Standard Model. In particular, we study in detail the effect of charged Higgs bosons in twoHiggs doublet models, and the contribution of SUSY particle loops in the minimal supersymmetric extension of the Standard Model. The Higgs γ Z coupling can be measured in the decay Z > γ +Higgs at e^{+e^} colliders running on the Z resonance, or in the reverse process Higgs > Z γ with the Higgs boson produced at LHC. We show that a measurement of this coupling with a precision at the percent level, which could be the case at future e^{+e^} colliders, would allow to distinguish between the lightest SUSY and standard Higgs bosons in large areas of the parameter space.
 Publication:

European Physical Journal C
 Pub Date:
 1998
 DOI:
 10.1007/BF01245806
 arXiv:
 arXiv:hepph/9701342
 Bibcode:
 1998EPJC....1..163D
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 18 pages LaTex + 7 figures (ps). Typo corrected in eq.(5)