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arXiv · hep-ph/0510304

QCD sum rules for the anti-charmed pentaquark

Yasemin Sarac·Hungchong Kim·Su Houng Lee
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Abstract

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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Yasemin Sarac, Hungchong Kim, Su Houng Lee. 2005-12-02. QCD sum rules for the anti-charmed pentaquark. https://doi.org/10.1103/physrevd.73.014009

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