Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD sum rules for the anti-charmed pentaquark   We present a QCD sum rule analysis for the anti-charmed pentaquark state with
and without strangeness. While the sum rules for most of the currents are
either non-convergent or dominated by the $DN$ continuum, the one for the
non-strange pentaquark current composed of two diquarks and an antiquark, is
convergent and has a structure consistent with a positive parity pentaquark
state after subtracting out the $DN$ continuum contribution. Arguments are
presented on the similarity between the result of the present analysis and that
based on the constituent quark models, which predict a more stable pentaquark
states when the antiquark is heavy.

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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc