Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On a Possible Mechanism of the Production of Pentaquark States
  $\Theta(ud\bar{s}ud)$   A new mechanism of the production of hypothetical $\Theta(ud\bar{s}ud)^+$
pentaquark state is suggested. The considered mechanism is based on the
exchange by exotic Regge trajectories in the $t$ channel. It is shown that the
momentum distributions of $\Theta^+$ baryons can differ significantly from the
ones of the ordinary hyperons.

20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con