A new conception in describing the Drell-Yan type processes
  A set of evolution equations for correlators of densities of quark and gluons is considered. Approximate solutions is obtained in frames of gluon and quark dominance. A new formulation of the cross sections of Drell-Yan process is suggested. Differential cross sections for the QCD sub-processes of type $2 \to 2$ are obtained. Sub-process $g b\to tH^-$ as well considered. 
A.I.Ahmadov, Yu.M.Bystritskiy, E.S.Kokoulina, E.A.Kuraev
hep-ph