Consequences of the extra SM families on the Higgs boson production at Fermilab Tevatron and CERN LHC

Abstract
The latest electroweak precision data allow the existence of additional chiral generations in the standard model. We study the influence of extra generations on the production of the standard model Higgs boson at hadron colliders. Because of the enhancement of the gluon fusion channel, the “golden mode” becomes more promising even at the upgraded Fermilab Tevatron. Furthermore, the formation of the fourth family quarkonia with the subsequent ηZh decay introduces an additional tool for investigation of Higgs boson properties.