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The Width of the $\Theta^{+}$ Exotic Baryon in the Chiral Soliton Model
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abstract
In 1997 Diakonov, Petrov, and Polyakov, calculated the width of the exotic baryon that they called $\Theta^{+}$. The prediction, $\Gamma(\Theta^{+})\lesssim$ 15 MeV, has received considerable attention, especially in light of the narrowness of the experimentally reported $\Theta^{+}$ resonance. However, there is an arithmetic error in their work: when corrected, the width estimate quoted in that paper should have been $\lesssim$~30 MeV.
Forward citations
Cited by 2 Pith papers
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Pentaquarks and Maxim V. Polyakov
A review argues that Diakonov-Petrov-Polyakov's narrow-width Theta+ pentaquark prediction remains viable, identifying N*(1685) as the antidecuplet partner and citing LEPS/DIANA data as support.
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Odyssey of the elusive $\Theta^+$
A review of the Theta+ pentaquark story concludes that the chiral soliton model's small-width prediction remains viable and new kaon-beam experiments may decide its existence.
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