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Quark-mass dependence of baryon resonances

✍ Scribed by M.F.M. Lutz; C. García-Recio; E.E. Kolomeitsev; J. Nieves

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
185 KB
Volume
754
Category
Article
ISSN
0375-9474

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✦ Synopsis

We study the quark-mass dependence of J P = 1 2 -s-wave and J P = 3 2 -d-wave baryon resonances. Parameter-free results are obtained in terms of the leading order chiral Lagrangian. In the 'heavy' SU(3) limit with m π = m K 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 m π = m K 140 MeV for which no resonances exist.

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