Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the direct nucleon decay of high-spin subbarrier single-particle
  states in near-magic nuclei   The description of the direct nucleon decay of high-spin subbarrier
one-particle states in near-magic nuclei is attempted using a simple optical
model and the simplest version of the coupled-channel approach. The branching
ratios for the direct decay of the several single-neutron states in $^{209}Pb$
and $^{91}Zr$ to the ground state and to the low-lying collective states of
$^{208}Pb$ and $^{90}Zr$, respectively, are evaluated. Results are compared
with recent experimental data.

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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom