Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The meson spectrum in large-N QCD   We present lattice results on the meson spectrum and decay constants in
large-N QCD. The results are obtained in the quenched approximation for N = 2,
3, 4, 5, 6, 7 and 17 and extrapolated to infinite N.

32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
1
The categories of this paper are: cs
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga