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On baryon resonances and chiral symmetry | | E.E. Kolomeitsev
; M.F.M. Lutz
; | | Date: |
30 May 2003 | | Journal: | Phys.Lett. B585 (2004) 243-252 | | Subject: | nucl-th | | 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_pi = 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. | | Source: | arXiv, nucl-th/0305101 | | Services: | Forum | Review | PDF | Favorites | |
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