Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Beta delayed emission of a proton by a one-neutron halo nucleus   Some one-neutron halo nuclei can emit a proton in a beta decay of the halo
neutron. The branching ratio towards this rare decay mode is calculated within
a two-body potential model of the initial core+neutron bound state and final
core+proton scattering states. The decay probability per second is evaluated
for the $^{11}$Be, $^{19}$C and $^{31}$Ne one-neutron halo nuclei. It is very
sensitive to the neutron separation energy.

14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: econ