The Skyrme Model Revisited: An Effective Theory Approach and Application to the Pentaquarks

Abstract

The Skyrme model is reconsidered from an effective theory point of view. Starting with the most general Lagrangian up to including terms of order $p^4$, $N_c$ and $\delta m^2$ ($\delta m\equiv m_s-m$), we obtain new interactions, which have never been discussed in the literature. We obtain the parameter set best fitted to the low-lying baryon masses by taking into account the representation mixing up to $27$. A prediction for the mainly anti-decuplet excited nucleon $N^{\prime }$ and ${\Sigma }^{\prime }$ is given.

talk given at International Workshop PENTAQUARK04, July 20-23 (2004) at SPring-8, based on the work (hep-ph/0410145) done in collaboration with Y. Mitsunari and N. Yamashita; 8 pages

References in corpus (7)

• Chiral-Soliton Predictions for Exotic Baryons
• The width of ${\Theta }^{+}$ for large $N_c$ in chiral quark soliton model
• The Width of the ${\Theta }^{+}$ Exotic Baryon in the Chiral Soliton Model
• Effect of exotic S=+1 resonances on $K_L^{0}p$ scattering data
• Effective Theory Approach to the Skyrme model and Application to Pentaquarks
• Comment on the Theta+ width and mass
• Comment on hep-ph/0404212 by D. Diakonov, V. Petrov, and M. Polyakov