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arXiv · hep-ph/0309111

Chiral soliton models, large N_c consistency and the Theta^+ exotic baryon

Thomas D. Cohen
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Abstract

Predictions for a light collective $Θ^+$ baryon state (with strangeness +1) based on the collective quantization of chiral soliton models are shown to be inconsistent with large $N_c$ QCD. The lightest strangeness +1 state to emerge from the analysis has an excitation energy which at large $N_c$ scales as $N_c^0$ while collective quantization is legitimate only for excitations which go to zero as $N_c \to \infty$. This inconsistency strongly suggests that predictions for $Θ^+$ properties based on collective quantization of chiral solitons are not valid.

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Thomas D. Cohen. 2003-11-26. Chiral soliton models, large N_c consistency and the Theta^+ exotic baryon. https://doi.org/10.1016/j.physletb.2003.11.065

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