Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data
R. L. Workman, R. A. Arndt, I. I. Strakovsky
Abstract
We compare results for the D13(1520) photon-decay amplitudes determined in analyses of eta- and pion-photoproduction data. The ratio of helicity amplitudes (A3/2 / A1/2), 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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