Beyond the known baryon resonances

Details Beyond the known baryon resonances Beyond the known baryon resonances

2003-05-02

arxiv.org/abs/nucl-th/0305004v1

Physics

Nuclear Physics

Nuclear Theory

5 pages, 1 figure; invited talk given at Nstar2002 Workshop on the Physics of Excited Nucleons, Pittsburgh, Pennsylvania, Oct.

Scientific paper

eta photoproduction data on the proton up to E=2 GeV are interpreted within a
chiral constituent quark formalism, which embodies all known three and four
star resonances. This study confirms the need for a new S11 resonance, with
M=1.780 GeV and Gamma=280 MeV, already introduced in investigating lower energy
data.

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