Distinguishing Higgs models at photon colliders

Abstract

We consider the two effective couplings hZ\gamma and h\gamma\gamma involving a neutral scalar Higgs boson with a mass around 100 GeV in the Standard Model, in the Two Higgs Doublet Model, and in the Minimal Supersymmetric Standard Model. The couplings can be tested at Photon Colliders, and used to distinguish these models.

Comments: 5 pages, LaTeX, using sprocl.sty, including 2 figures. Contribution to the Proceedings of the International Workshop on Linear Colliders, April 28-May 5, 1999, Sitges (Spain). Version 2: minor clarifications