Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse Spin Dependent Drell Yan in QCD to $O(\alpha_s^2)$ at Large
  $p_T$ (I). Virtual Corrections and Methods for the Real Emissions   We investigate the role of the transverse spin dependence in Drell Yan lepton
pair production to NLO in QCD at parton level. In our analysis we deal with the
large $p_T$ distributions. We give very compact expressions for the virtual
$O(\alpha_s^2)$ corrections to the cross section and show that the
singularities factorize. The study is performed in the $\bar{MS}$ scheme in
Dimensional Regularization, and with the t'Hooft-Veltman prescription for
$\gamma_5$. A discussion of the structure of the real emissions is included,
and detailed methods for the study of these contributions are formulated.

34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs