Some Remarks on Exotic Resonances

Details Some Remarks on Exotic Resonances Some Remarks on Exotic Resonances

2004-11-01

arxiv.org/abs/hep-ph/0411025v1

Int.J.Mod.Phys. A20 (2005) 1981-1984

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2004), Beijing, Chi

Scientific paper

10.1142/S0217751X05023785

Using large $N_c$ counting rule, it is argued that tetra-quark resonances do
not exist. Also it is pointed out that there exists the violation of exchange
degeneracy in the exotic $KN$ scattering channel. It implies either the failure
of resonance saturation assumption or it suggests the existence of exotic
baryon resonances in such a channel.

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