Successes and Problems of Chiral Soliton Approach to Exotic Baryons
Abstract
We briefly review the formulation of chiral quark soliton model and explain the difference and similarities with the Skyrme model. Next, we apply the model to calculate non-exotic and exotic mass spectra. We concentrate on large Nc counting both for mass splittings and decay widths. It is shown that pure large Nc arguments do not explain the small width of exotic pentaquark states.
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