Exotic Baryons and Monopole Excitations in a Chiral Soliton Model

Abstract

We compute the spectra of exotic pentaquarks and monopole excitations of the low--lying ${1/2}^{+}$ and ${3/2}^{+}$ 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 $J^{\pi }={1/2}^{+}$ states is fairly well approximated by the ideal mixing pattern of the $8\oplus \overline{10}$ 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 $\Xi (1690)$ and $\Xi (1950)$

16 pages, 2 figures, 6 tables

References in corpus (4)

• Diquarks and Exotic Spectroscopy
• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• The width of ${\Theta }^{+}$ for large $N_c$ in chiral quark soliton model
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• Chiral Symmetry and N*(1440) -> N pi pi Decay
• Dynamics of pentaquarks in constituent quark models: recent developments
• Effective Theory Approach to the Skyrme model and Application to Pentaquarks
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