Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shell model predictions for $^{124}$Sn double-beta decay   Neutrinoless double-beta ($0 \nu \beta \beta$) decay is a promising beyond
Standard Model process. Two-neutrino double-beta ($2 \nu \beta \beta$) decay is
an associated process that is allowed by the Standard Model, and it was
observed in about 10 isotopes, including decays to the excited states of the
daughter. $^{124}$Sn was the first isotope whose double-beta decay modes were
investigated experimentally, and despite few other recent efforts, no signal
has been seen so far. Shell model calculations were able to make reliable
predictions for $2 \nu \beta \beta$ decay half-lives. Here we use shell model
calculations to predict the $2 \nu \beta \beta$ decay half-life of $^{124}$Sn.
Our results are quite different from the existing quasiparticle random-phase
approximation (QRPA) results, and we envision that they will be useful for
guiding future experiments. We also present shell model nuclear matrix elements
for two potentially competing mechanisms to the $0 \nu \beta \beta$ decay of
$^{124}$Sn.

19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph