MEASUREMENT OF THE TWO-PHOTON DECAY WIDTH OF THE INTERMEDIATE MASS HIGGS BOSONS IN A PHOTON-PHOTON COLLIDER

The feasibility of a measurement of the partial decay width of the intermediate-mass Higgs boson(MH=120 GeV) into two photons at a photon-photon collider is studied by a simulation. It is found that the two-photon decay width can be measured with the statistical error of 7.6% with the integrated luminosity of 10fb-1. We also discussed a possibility toward further improvement with sophisticated b-quark tagging technique.