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On baryon resonances and chiral symmetry

E. E. Kolomeitsev·M. F. M. Lutz
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Abstract

We study J^P=(3/2)^- baryon resonances as generated by chiral coupled-channel dynamics. Parameter free results are obtained in terms of the Weinberg-Tomozawa term predicting the leading s-wave interaction strength of Goldstone bosons with baryon-decuplet states. In the 'heavy' SU(3) limit with m_π= m_K \sim 500 MeV the resonances turn into bound states forming a decuplet and octet representation of the SU(3) group. Using physical masses the mass splitting are remarkably close to the empirical pattern.

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E. E. Kolomeitsev, M. F. M. Lutz. 2003-07-23. On baryon resonances and chiral symmetry. https://doi.org/10.1016/j.physletb.2004.01.066

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