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Within the four generation Standard Model, the Higgs couplings to gluons andto photons deviate in a significant way from the predictions of the threegeneration Standard Model. As a consequence, large departures in several Higgsproduction and decay channels are expected. Recent Higgs search results,presented by ATLAS, CMS and CDF, hint on the existence of a Higgs boson with amass around 125 GeV. Using these results and assuming such a Higgs boson, wederive exclusion limits on the four generation Standard Model. For m_H = 125GeV, the model is excluded at 99.9% confidence level. For 124 GeV <= m_H <= 127GeV, an exclusion limit above 95% confidence level is found.

Implications of Higgs Searches on the Four Generation Standard Model