Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the gallium experiment BEST-2 with a $^{65}$Zn source to search for
  neutrino oscillations on a short baseline   In the paper is considered the use of a , $^{65}$Zn source in the BEST-2
gallium experiment to constrain the regions of the allowed oscillation
parameters. The required activity of the $^{65}$Zn source for the BEST-2
experiment, its size, effect on the results of oscillatory measurements, as
well as the possibility of production such a source are calculated. Schemes of
measurements execution are considered.

28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs