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Exotic baryons and monopole excitations in a chiral soliton model

Authors:	H.?Weigel author-information" > author-information__contact u-icon-before" > mailto:weigel@physik.uni-siegen.de" title=" weigel@physik.uni-siegen.de" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author

Affiliation:	(1) Fachbereich Physik, Siegen University, Walter-Flex-Straße 3, D-57068 Siegen, Germany

Abstract:	We compute the spectra of exotic pentaquarks and monopole excitations of thelow-lying $frac{1}{2}^ +$ and $frac{3}{2}^ +$ baryons in a chiral soliton model. Once the low-lying baryon properties are fit, the other states are predicted without any more adjustable parameters. This approach naturally leads to a scenario in which the mass spectrum of the next to lowest-lying $J^pi = frac{1}{2}^ +$ states is fairly well approximatedby the ideal mixing pattern of the representation of flavor SU(3). We compare our results to predictions obtained in other pictures for pentaquarks and speculate about the spin-parity assignment for and .Received: 21 April 2004, Revised: 19 May 2004, Published online: 23 July 2004PACS: 12.39.Dc Skyrmions - 14.20.-c Baryons (including antiparticles) - 14.80.-j Other particles (including hypothetical)

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