Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-06-29
Z.Phys.A352:327-343,1995
Physics
Nuclear Physics
Nuclear Theory
24 pages RevTeX/LaTeX2.09, NFSS1, 13 figures (in separate file (tar,gzip and uue)), accepted for publication in Z. Phys. A
Scientific paper
10.1007/BF01289506
Eta photo- and electroproduction off the nucleon is investigated in an effective lagrangian approach that contains Born terms and both vector meson and nucleon resonance contributions. In particular, we review and develop the formalism for coincidence experiments with polarization degrees of freedom. The different response functions appearing in single and double polarization experiments have been studied. We will present calculations for structure functions and kinematical conditions that are most sensitive to details of the lagrangian, in particular with regard to contributions of nucleon resonances beyond the dominant $S_{11}$(1535) resonance.
Drechsel Dieter
Knöchlein G.
Tiator Lothar
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