Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Insights into the pi- p -> eta n reaction mechanism   A dynamical coupled-channels formalism is used to investigate the
$\eta-$meson production mechanism on the proton induced by pions, in the total
center-of-mass energy region from threshold up to 2 GeV. We show how and why
studying exclusively total cross section data might turn out to be misleading
in pinning down the reaction mechanism.

3
The categories of this paper are: physics
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org