Role of the D_{13}(1520) resonance in η electroproduction
Abstract
We investigate electroproduction of η mesons below a W of 1.6 GeV, with particular emphasis on the roles of the N^{*}(1535) and N^{*}(1520) resonances. Using the effective Lagrangian approach, we show that the transverse helicity amplitude of N^{*}(1535) can be extracted with good accuracy from the new data, under reasonable assumptions for the strength of the longitudinal helicity amplitude. In addition, although the differential cross section is found to have a small sensitivity to the N^{*}(1520) resonance, it is shown that a recently completed double polarization experiment is very sensitive to this resonance.
 Publication:

Physical Review C
 Pub Date:
 November 2000
 DOI:
 10.1103/PhysRevC.62.058201
 arXiv:
 arXiv:nuclth/9912040
 Bibcode:
 2000PhRvC..62e8201D
 Keywords:

 13.60.Le;
 12.39.x;
 12.38.Gc;
 12.38.Lg;
 Meson production;
 Phenomenological quark models;
 Lattice QCD calculations;
 Other nonperturbative calculations;
 Nuclear Theory;
 High Energy Physics  Phenomenology
 EPrint:
 7 pages, Revtex, 3 figures