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From the current literature


Exotic baryon resonances and the model of chiral solitons


Institute for Nuclear Research, Russian Academy of Sciences, prosp. 60-letiya Oktyabrya 7a, Moscow, 117312, Russian Federation

A recently observed baryonic resonance with positive strangeness is discussed. The state is exotic because valence quarks alone cannot produce it and at least one quark-antiquark pair must be involved. The mass of the resonance is in agreement with chiral soliton models, which predict a number of other exotic states with different quantum numbers. Some of these states (e.g., those with strangeness S =-2 and charges Q = 0,-2) are probably already being observed experimentally.

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Fulltext is also available at DOI: 10.1070/PU2004v047n03ABEH001725
PACS: 12.39.Dc, 12.39.Fe, 14.20.−c (all)
DOI: 10.1070/PU2004v047n03ABEH001725
URL: https://ufn.ru/en/articles/2004/3/e/
000223338900005
2004PhyU...47..309K
Citation: Kopeliovich V B "Exotic baryon resonances and the model of chiral solitons" Phys. Usp. 47 309–318 (2004)
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Оригинал: Копелиович В Б «Экзотические барионные резонансы и модель киральных солитонов» УФН 174 323–332 (2004); DOI: 10.3367/UFNr.0174.200403f.0323

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