Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged pions multiplicities at the NA49 energy   The wounded quark-diquark model predictions for charged pions multiplicities
in PbPb and pPb collisions in the central rapidity region at sqrt(s)=17.3 GeV
c.m. energy are presented.

0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn