Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarised parton distributions   We analyze spin dependent parton distributions consistent with the most
recent measurements of the spin dependent deep inelastic scattering structure
functions and obtained in the framework of the spin dilution model. Predictions
for the doubly polarised proton-proton Drell-Yan asymmetry, for the high
$p_{T}$ photon production mechanism and $J/\Psi$ excitation are calculated
using these distributions and are shown to be particularly adequate to unveil
the polarisation of partons in the proton.

25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs