Mesons electromagnetic production study via a constituent quark approach

Details Mesons electromagnetic production study via a constituent quark approach Mesons electromagnetic production study via a constituent quark approach

2001-04-30

arxiv.org/abs/nucl-th/0104086v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, Invited talk given at "International Workshop on Physics with GeV Electrons and Gamma-Rays", Sendai, February 13 -15,

Scientific paper

Using a chiral constituent quark approach based on the broken SU(6) \otimes
O(3) symmetry, we focus on the spectroscopy of isospin-1/2 nucleonic
resonances. A model for the eta photoproduction, embodying all known nucleonic
resonances, shows clear need for a yet undiscovered S11 resonance, for which we
determine the mass (1.730 GeV) and the total width (180 MeV).

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