Towards a measurement of the two-photon decay width of?the?Standard Model Higgs boson at a Photon Collider

摘要

A study of the measurement of the two photon decay width times the branching ratio of the Standard Model Higgs boson with a mass of 120?GeV in photon–photon collisions is presented, assuming a γγ integrated luminosity of 80?fb?1 in the high energy part of the spectrum. The analysis is based on the reconstruction of the Higgs events produced in the γγ→H process, followed by the decay of the Higgs into a (mathrm{b}ar{mathrm{b}}) pair. A?statistical error of the measurement of the two-photon width, Γ(H→γγ), times the branching ratio of the Higgs boson, BR((mathrm{H} o mathrm{b}ar{mathrm{b}})) is found to be 2.1% for one year of data taking.