Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Excited baryons and heavy pentaquarks in large Nc QCD   We briefly discuss the large Nc picture for excited baryons, present a new
method for the calculation of matrix elements and illustrate it by computing
the strong decays of heavy exotic states.

25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio