Document Type
Article
Article Version
Publisher's PDF
Publication Date
1-1-2007
Abstract
New cross sections for the reaction ep→e′ηp are reported for total center-of-mass energy W=1.5-2.3 GeV and invariant squared momentum transfer Q2=0.13-3.3 GeV2. This large kinematic range allows the extraction of new information about response functions, photocouplings, and ηN coupling strengths of baryon resonances. A sharp structure is seen at W~1.7 GeV. The shape of the differential cross section is indicative of the presence of a P-wave resonance that persists to high Q2. Improved values are derived for the photocoupling amplitude for the S11(1535) resonance. The new data greatly expand the Q2 range covered, and an interpretation of all data with a consistent parametrization is provided.
Publication Title
Physical Review C
Repository Citation
Denizli, H.; Biselli, Angela; and CLAS Collaboration, "Q2 dependence of the S11(1535) photocoupling and evidence for a P-wave resonance in η electroproduction" (2007). Physics Faculty Publications. 67.
https://digitalcommons.fairfield.edu/physics-facultypubs/67
Published Citation
H. Denizli et al. [CLAS Collaboration], "Q2 dependence of the S11(1535) photocoupling and evidence for a P-wave resonance in η electroproduction", Physical Review C 76.1 (2007) DOI: 10.1103/PhysRevC.76.015204
DOI
10.1103/PhysRevC.76.015204
Peer Reviewed
Comments
Copyright American Physical Society Publisher final version available at http://prc.aps.org/abstract/PRC/v76/i1/e015204