Two-photon Width and Phase Measurement from the SM Higgs Decays into WW and ZZ

Abstract

Production of the Standard Model Higgs-boson at the photon collider at TESLA is studied for the Higgs-boson masses above 170 GeV. By reconstructing WW and ZZ final states, not only the h to gamma-gamma partial width but also the phase of the scattering amplitude can be measured. This opens a new window onto the precise determination of the Higgs-boson couplings.

Presented at the International Workshop on Linear Colliders LCWS(2002), Jeju, Korea