The Width of the ${\Theta }^{+}$ Exotic Baryon in the Chiral Soliton Model

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.

arXiv comment3 pages, no figures; title and abstract changed, minor typographical changes, reference to original literature modified

References in corpus (2)

• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Radial excitations of low--lying baryons and the $Z^{+}$ penta--quark

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• Implications of the Present Bound on the Width of the Theta(1540)
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