Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible open-charmed pentaquark molecule $\Omega_c(3188)$ --- the $D
  \Xi$ bound state --- in the Bethe-Salpeter formalism   We study the $S$-wave $D\Xi$ bound state in the Bethe-Salpeter formalism in
the ladder and instantaneous approximations. With the kernel generated by the
hadronic effective Lagrangian, two open-charmed bound states, which quantum
numbers are $I=0$, $J^P=(\frac{1}{2})^-$ and $I=1$, $J^P=(\frac{1}{2})^-$,
respectively, are predicted as new candidates of hadronic pentaquark molecules
in our formalism. If existing, they could contribute to the broad 3188 eV
structure near the five new narrow $\Omega_c$ states observed recently by the
LHCb Collaboration.

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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: funct-an