On charm baryon resonances and chiral symmetry
نویسندگان
چکیده
We study heavy-light baryon resonances with quantum numbers JP = 12 − in terms of the non-linear chiral SU(3) Lagrangian. Within the χ−BS(3) approach a parameterfree leading order prediction is obtained for the scattering of Goldstone bosons off heavy-light baryon resonances with JP = 12 + . The three states Λc1(2593),Λc0(2880) and Ξc1(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) = (12 ,+1) are anticipated.
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