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Exotic baryon states in QCD sum rule

A. G. Oganesian
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Abstract

It is shown, that the small decay width of $Θ^+ = uudd\bar{s}$ baryon is suppressed by chirality violation. It is shown that $Θ^+$ decay width $Γ$ is proportional to $α^2_s < 0 | \bar{q} q | 0 >^2$, for any pentaquark current without derivatives.

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A. G. Oganesian. 2004-11-15. Exotic baryon states in QCD sum rule. https://arxiv.org/abs/hep-ph/0410335

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