Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data

Details Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data

1999-11-08

arxiv.org/abs/nucl-th/9911030v1

Phys.Rev. C62 (2000) 048201

Physics

Nuclear Physics

Nuclear Theory

7 pages, 2 figures

Scientific paper

10.1103/PhysRevC.62.048201

We compare results for the D13(1520) photon-decay amplitudes determined in analyses of eta- and pion-photoproduction data. The ratio of helicity amplitudes (A_3/2 / A_1/2), determined from eta-photoproduction data, is quite different from that determined in previous analyses of pion-photoproduction data. We consider how strongly the existing pion-photoproduction data constrain both this ratio and the individual photon-decay amplitudes.

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