2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42650Measurement of the Gamma(h -> gamma gamma)Br(h -> b bbar) at the Photon Collider at TESLA is studied for the Standard Model Higgs boson with mass of 120 to 160 GeV. The NLO estimation of background, analysis of overlaying events, realistic b-tagging and corrections for escaping neutrinos were performed. We find that for M_h = 120-160 GeV the Gamma(h -> gamma gamma)Br(h -> b bbar) can be measured with a statistical accuracy of 2-7% after one year of the Photon Collider running.12 pages, 8 figures. Submitted to International Europhysics Conference on High Energy Physics EPS 2003, Aachen, Germany, abstract 595High Energy Physics - Phenomenologytext