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The feasibility of measuring the Higgs-boson properties at the PhotonCollider at TESLA has been studied in detail for masses between 200 and 350GeV, using realistic luminosity spectra and detector simulation. We considerthe Two Higgs Doublet Model (II) with SM-like Yukawa couplings for h,parametrized by only one parameter (tan(beta)). The combined measurement of theinvariant-mass distributions in the ZZ and W+W- decay-channels is sensitive toboth the two-photon width Gamma_{gamma gamma} and phase Phi_{gamma gamma}. Fromthe analysis including systematic uncertainties we found out that after oneyear of Photon Collider running with nominal luminosity the expected precisionin the measurement of tan(beta) is of the order of 10%, for both light (h) andheavy (H) scalar Higgs bosons. The H-A mixing angle Phi_{HA}, characterizing aweak CP violation in the model with two Higgs doublets, can be determined toabout 100 mrad, for low tan(beta).Comment: 17 pages, 9 figures; published versio

Determination of the Higgs-boson couplings and CP properties in the SM-like Two Higgs Doublet Model