Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nuclear emulsion with molybdenum filling for observation of $\beta\beta$
  decay   The usage of nuclear emulsion with molybdenum filling for observation of
$\beta\beta$ decay are shown to be possible. Estimates for 1 kg of $^{100}$Mo
with zero background give the sensitivity for the $0\nu\beta\beta$ decay of
$^{100}$Mo at the level of $\sim 1.5\cdot 10^{24}$ y for 1 year of measurement.

28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol