Drell-Yan lepton pair production at high energies in the kt-factorization approach

Understand

In the framework of the kt-factorization approach, the production of unpolarized Drell-Yan lepton pair at high energies is studied.

• The consideration is based on the O(alpha) and $O(alpha alpha_s) off-shell partonic matrix elements with virtual photon and Z boson exchange.
• The calculations include leptonic decays of Z bosons with full spin correlations as well as gamma - Z interference.
• The unintegrated parton densities in a proton are determined by the Kimber-Martin-Ryskin prescription.