  The Higgs boson of Standard Model, minimally coupled to the gravitation, is
not able to produce the inflation of early Universe if its mass exceeds the
threshold value, which is equal to m_H^{min} = 142 GeV in the tree
approximation for the scalar potential. Two-loop corrections modify the
estimate as m_H^{min} = 150 \pm 3 GeV, so that higher-order corrections of
perturbation theory are completely under control, though they are numerically
important in respect of experimental searches.
