Quark mass dependence of s-wave baryon resonances

By C. García-Recio, M. Lutz, J. Nieves. 2003

164 citations recorded by the source corpus.

Abstract We study the quark mass dependence of J P =1/2 − s-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 resonances turn into bound states forming two octets plus a singlet representations of the SU(3) group. A contrasted result is obtained in the ‘light’ SU(3) limit with m π = m K ≃140 MeV for which no resonances exist. Using physical quark masses our analysis suggests to assign to the S =−2 resonances Ξ(1690) and Ξ(1620) the quantum numbers J P =1/2 − .

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/170bd201dd4aa11fc2e193c2f8fc8837d7410742

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In Nuclear and High Energy Physics

1. Ulf-G. Meissner
2. C. Hanhart
3. Qiang Zhao
4. Feng-Kun Guo
5. Bing-song Zou
6. Qian Wang

Citations in the corpus

• Hadronic molecules (2017, background): “…(Helminen and Riska, 2002; Liu and Zou, 2006; Zou, 2008) or considering them to be dynamically generated meson-baryon states (Bruns et al., 2011; Garcia-Recio et al., 2004; Huang et al., 2007; Hyodo et al., 2003; Inoue et al., 2002; Kaiser et al., 1995; Magas et al., 2005; Oller and Meißner,…”