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HK: Hadronen und Kerne

HK 67: Structure of Baryons, Mesons IX, Theory

HK 67.2: Gruppenbericht

Donnerstag, 19. März 1998, 14:30–15:00, H

Exotic antidecuplet of baryons: prediction from chiral solitons and is possible experimental searches — •M.V. Polyakov^2,3, D.I. Diakonov¹, V.Yu. Petrov², and P.V. Pobylitsa² — ¹NORDITA, Copenhagen — ²Petersburg Nuclear Physics Institute, St. Petersburg — ³Institut für Theoretische Physik II, Ruhr–Universität Bochum

We predict an exotic Z⁺ baryon (having spin 1/2, isospin 0 and strangeness +1) with a relatively low mass of about 1530 MeV and total width of less than 15 MeV. It seems that this region of masses has avoided thorough searches in the past. Possible experimental searches of the exotic Z⁺ are discussed.