Photo- and Electroproduction of Eta Mesons on Nucleons and Nuclei

  • L. Tiator
  • C. Bennhold
  • S. S. Kamalov
  • G. Knöchlein
  • F. X. Lee
  • L. E. Wright
Part of the Few-Body Systems book series (FEWBODY, volume 9)


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.


Total Cross Section Vector Meson Longitudinal Cross Section Nucleon Resonance Born Term 
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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • L. Tiator
    • 1
  • C. Bennhold
    • 2
  • S. S. Kamalov
    • 3
  • G. Knöchlein
    • 1
  • F. X. Lee
    • 4
  • L. E. Wright
    • 5
  1. 1.Institut für KernphysikJohannes Gutenberg-Universität MainzMainzGermany
  2. 2.Center of Nuclear Studies, Department of PhysicsThe George Washington UniversityUSA
  3. 3.Laboratory of Theoretical PhysicsJINR DubnaMoscowRussia
  4. 4.TRIUMF Theory GroupVancouverCanada
  5. 5.Institute of Nuclear and Particle Physics, Department of PhysicsOhio UniversityAthensUSA

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