Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Drell-Yan lepton pair production at high energies in the
  kt-factorization approach   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. Our numerical predictions
are compared with the data taken by the D0, CDF and CMS collaborations at the
Tevatron and LHC energies. Special attention is put on the specific angular
distributions measured very recently by the CDF collaboration for the first
time.

29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph