[iopmath latex="$\Delta\Delta$"] [/iopmath] and [iopmath latex="$\Delta \Delta \Delta$"] [/iopmath] bound states

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Abstract:

We calculate the two- and three-body spectra of deltas using a chiral quark cluster model and a meson-exchange model for the [iopmath latex="$\Delta\Delta$"] [/iopmath] interaction. The ordering of the states is pretty much model independent. Both models predict the existence of four [iopmath latex="$\Delta\Delta$"] [/iopmath] bound states that couple to the NN system. Three of these states can be identified with known NN states. The fourth state corresponds to a new NNresonance with isospin 0, spin 3 and positive parity. A possible signal of this resonance appears in recent analyses of NN data.

Document Type: Miscellaneous

Affiliations: 1: Grupo de Física Nuclear, Universidad de Salamanca, E-37008 Salamanca, Spain 2: Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Edificio 9, 07738 México DF, Mexico

Publication date: January 1, 2001

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