Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of the N N eta' production with COSY-11   We describe a new high precision measurement of the production cross-section
for the eta' meson in proton-proton collisions for five beam momenta at low
access energy region Q conducted at the COSY-11 detection system together with
an updated results of all other previous measurements of cross-section for
(pp-->pp eta') at COSY-11.

30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio