Quark-mass dependence of baryon resonances
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Quark-mass dependence of baryon resonances

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Quark-mass dependence of baryon resonances

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Lutz, Matthias F.M.; García Recio, Carmen; Kolomeitsev, Evgeni E.; Nieves Pamplona, Juan Miguel
Aquest document és un/a article, creat/da en: 2005
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(pi) = m(K) similar or equal to 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(pi) = M-K similar or equal to 140 MeV for which no resonances exist.

    Lutz, Matthias F.M. García Recio, Carmen Kolomeitsev, Evgeni E. Nieves Pamplona, Juan Miguel 2005 Quark-mass dependence of baryon resonances Nuclear Physics A 754 212C 220C
http://dx.doi.org/10.1016/j.nuclphysa.2005.01.037
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