Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charmonium production from nonequilibrium charm and anticharm quarks in
  quark-gluon plasma   Parameterizing the charm and anticharm quark momentum distributions by the
Tsallis distribution, we study the nonequilibrium effect on the charmonium
production rate in a quark-gluon plasma up to the next-to-leading order in
perturbative QCD. We find that nonequilibrium charm and anticharm quarks
suppress the charmonium production rate compared to that from equilibrated
ones. We further show that the suppression factor calculated with the charm
quark relaxation time, which has been frequently used in the literature, is
close to our results.

23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
1
The categories of this paper are: cs