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.

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) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Копелиович В Б «Экзотические барионные резонансы и модель киральных солитонов» УФН 174 323–332 (2004); DOI: 10.3367/UFNr.0174.200403f.0323