Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: Azimuthal anisotropy ($v_{2}$) of high-p$_{T}$ $\pi^{0}$ and direct
  $\gamma$ in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org