Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quarkonium as a tool: cold nuclear matter effects   We discuss the quarkonium production as a tool for the study of the Quark
Gluon Plasma. In particular, we concentrate on the Cold Nuclear Matter effetcs.
We show that quarkonium production is also useful for the study of Quantum
Chromodynamics first principles and the nuclear Parton Distribution Functions.

13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin