Heavy Higgs Productions at $\gamma \gamma$ Colliders

Abstract

Multi-Higgs doublet models include more than one neutral Higgs bosons, some of which have different properties under a CP transformation. We examine their productions at $\gamma \gamma$ colliders. It is found that helicity observations of final top-pairs can be powerful tools to distinguish their CP properties, especially when masses of the Higgs bosons are almost degenerate.

Comments: 5 pages, LaTeX file with 2 PS figures. Figures and tables changed. Talk given at World-Wide Study of Physics and Detectors for Future Linear Colliders (LCWS 99), Sitges, Barcelona, Spain, 28 Apr - 5 May 1999