Negative Parity N* Resonances in an Extended GBE

Details Negative Parity N* Resonances in an Extended GBE Negative Parity N* Resonances in an Extended GBE

2003-06-20

arxiv.org/abs/nucl-th/0306055v1

Nucl.Phys. A725 (2003) 201-210

Physics

Nuclear Physics

Nuclear Theory

11 pages, no figure, accepted by Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(03)01604-X

In this paper, we calculate the masses and mixing angles of L=1 negative parity N* resonances in an extended GBE (Goldstone-boson-exchange model) with harmonic-oscillator wave functions. By using those mixing angles, we get their photoproduction amplitudes, and compare them with experimental data and the results of OPE (one-pion-exchange model), OPsE (only pseudoscalar meson exchange model), and OGE (one-gluon-exchange model). We find that the extended GBE gives right internal wave functions. It is essential to extend GBE to include not only pseudoscalar meson exchanges but also vector meson exchanges.

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