Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Future of low-x forward physics at RHIC   The rapidity dependence of inclusive and coincident particle production in
d(p)+Au collisions at RHIC can be used to probe nuclear parton distribution
functions down to small momentum fractions where theory anticipates that parton
saturation could be present. This paper describes how such experiments could be
completed.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol