Quark-mass dependence of baryon resonances Original Research Article

We study the quark-mass dependence of View the MathML sources-wave and View the MathML sourced-wave baryon resonances. Parameter-free results are obtained in terms of the leading order chiral Lagrangian. In the ‘heavy’ SU(3) limit with mπ=mK≃500 MeV the s-wave resonances turn into bound states forming two octets plus a singlet representations of the SU(3) group. Similarly the d-wave resonances turn into bound states forming an octet and a decuplet in this limit. A contrasted result is obtained in the ‘light’ SU(3) limit with mπ=mK≃140 MeV for which no resonances exist.