Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Dependence of Associated Production of a Prompt Photon and a Charm
  Quark at Next-to-Leading Order in QCD   A second order, $O(\alpha ^2_s)$, calculation in perturbative quantum
chromodynamics is presented of the longitudinal spin dependence of the cross
section for the two particle inclusive reaction $p + p \to \gamma + c + X$ for
large values of the transverse momentum of the prompt photon and charm quark.
Differential distributions are provided for the spin-averaged cross section and
for the two-spin longitudinal polarization asymmetry $A_{LL}$ at the energy of
the Brookhaven Relativistic Heavy Ion Collider. An assessment is given of the
prospects for determination of the spin dependence of the charm quark density.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess