On charm baryon resonances and chiral symmetry

M. F. M. Lutz; E. E. Kolomeitsev

doi:10.1016/j.nuclphysa.2003.10.012

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arXiv · hep-ph/0307233

On charm baryon resonances and chiral symmetry

M. F. M. Lutz·E. E. Kolomeitsev

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Abstract

We study heavy-light baryon resonances with quantum numbers J^P=1/2^- in terms of the non-linear chiral SU(3) Lagrangian. Within the chi-BS(3) approach a parameter-free leading order prediction is obtained for the scattering of Goldstone bosons off heavy-light baryon resonances with J^P=1/2^+. The three states Lambda_{c1}(2593), Lambda_{c0}(2880) and Xi_{c1}(2790) discovered by the CLEO collaboration are recovered. We suggest the existence of resonance states that form an anti-quindecimplet, two sextet and two anti-triplet representations of the SU(3) group. In particular, narrow states with anomalous isospin (I) and strangeness (S) quantum numbers (I,S)=(1/2,+1) are anticipated.

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M. F. M. Lutz, E. E. Kolomeitsev. 2003-09-16. On charm baryon resonances and chiral symmetry. https://doi.org/10.1016/j.nuclphysa.2003.10.012

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