Higgs boson production on protons within the QCD semihard approach

Higgs boson (H) production in proton-proton collisions via the mechanism of gluon-gluon fusion is considered within the QCD semihard (k _T-factorization) approach. Results are presented that were obtained by calculating the total and differential cross sections for inclusive Higgs boson production in \(p\bar p \to H + X\) processes at the Tevatron collider and LHC energies. It is shown that, even in the leading order, the QCD semihard approach makes it possible to study processes involving the associated production of Higgs bosons and one or two hadron jets. Various azimuthal correlations arising in such processes between the transverse momenta of final particles are analyzed. The dependence of all calculated quantities on the choice of unintegrated gluon distribution in the proton is examined.