The SM Higgs-boson production in gamma gamma -> h -> bb at the Photon Collider at TESLA
Abstract
Measuring the Gamma(h -> gamma gamma)Br(h -> bb) decay at the photon collider at TESLA is studied for a Standard Model Higgs boson of mass mh = 120 GeV. The main background due to the process gamma gamma -> QQ(g), where Q = b,c, is estimated using the NLO QCD program (G. Jikia); the results obtained are compared with the corresponding LO estimate. Using a realistic luminosity spectrum and performing a detector simulation with the SIMDET program, we find that the Gamma(h -> gamma gamma)Br(h -> bb) decay can be measured with an accuracy better than 2% after one year of photon collider running.
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