Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: Role of the $\Lambda^+_c(2940)$ in the $\pi^- p \to D^- D^0 p$ reaction
  close to threshold
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
16
The categories of this paper are: stat