Higgs boson production in γγ collisions via resolved-photon contributions

We studied single Higgs boson production in gamma gamma collisions proceeding via the hadronic content of the photon. For SM Higgs masses of current theoretical interest, the resolved photon contributions are non-negligible in precision cross section measurements. We found that production of the heavier Higgs bosons H-0 and A(0) of the MSSM can probe regions of the SUSY parameter space that will complement other measurements. Finally, we showed that associated tH(+/-) production in gamma gamma collisions can be used to make an accurate determination of tan beta for low and high tan beta by precision measurements of the gamma gamma -> H(+/-)t + X cross section.