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Near threshold photoproduction of {eta} mesons off the proton

Journal Article · · Physical Review Letters
We have measured precise total and differential cross sections for the reaction {gamma}{ital p}{r_arrow}{ital p}{eta} from threshold to 790 MeV at the MAMI accelerator in Mainz with the neutral meson spectrometer TAPS. Resonance parameters of the {ital S}{sub 11}(1535) resonance and the electromagnetic coupling {gamma}{ital p}{r_arrow}{ital S}{sub 11} have been extracted from the data. Contributions from the {ital D}{sub 13}(1520) resonance to {eta} photoproduction in the threshold region have been identified for the first time via interference terms in the angular distributions.
OSTI ID:
55262
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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