Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On nature of scalar a_0(980) and f_0(980)-mesons   It is presented a critical consideration of all unusual properties of the
scalar a_0(980) and f_0(980)-mesons in the four-quark, two-quark and molecular
models. The arguments are adduced that the four-quark model is more preferable.
It is discussed the complex of experiments that could finally resolve this
issue.

27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg