6533b828fe1ef96bd1288c98
RESEARCH PRODUCT
Photo- and Electroproduction of Eta Mesons on Nucleons and Nuclei
Frank X. LeeLouis E. WrightG. KnöchleinC. BennholdL. TiatorS. S. Kamalovsubject
CouplingCoupling constantPhysicsParticle physicsMesonNuclear TheoryEta mesonResonanceNuclear physicsPseudoscalarHigh Energy Physics::ExperimentVector mesonNuclear ExperimentNucleondescription
Eta photo- and electroproduction off the nucleon is investigated in an approach that contains Born terms, vector meson and nucleon resonance contributions. In a comparison with the new Mainz data we find a large sensitivity on the elementary ηN N coupling. Our analysis results in a pseudoscalar ηN N coupling with a coupling constant of g ηN N 2 /4π=0.4. Furthermore, we also study coincidence cross sections for eta electroproduction and present calculations for structure functions and kinematical conditions that are most sensitive to the S 11(1535) and the D 13(1520) resonances. Finally, we show results on the inclusive eta photoproduction off complex nuclei with a very good agreement with recent data from Mainz.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 |