Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-11-02
Int.J.Mod.Phys.A20:1619-1626,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk at the MENU04 Symposium, Beijing, September 2004
Scientific paper
10.1142/S0217751X05023086
In this talk we report on the use of a chiral unitary approach for the interaction of the octets of meson and baryon and the octet of mesons with the decuplet of baryons. Two octets of $J^{\pi}=1/2^-$ baryon states and a singlet are generated dynamically in the first case, resulting in the case of strangeness $S=-1$ in two poles of the scattering matrix close to the nominal $\Lambda(1405)$ resonance. In the second case many resonances are also generated, among them an exotic baryon with S=1 corresponding to a $\Delta K$ resonance. We make suggestions of experiments which could show evidence for the existence of these states.
Oset Eulogio
Sarkar Sourav
Vicente Vacas M. J.
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