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Precise pion electroproduction in thep(e,e′ π+)n reaction at W=1125 MeV |
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| Authors: | K I Blomqvist W U Boeglin R Böhm M Distler D Drechsel R Edelhoff J Friedrich R Geiges O Hanstein M Kahrau M Korn H Kramer K W Krygier V Kunde M Kuss A Liesenfeld K Merle R Neuhausen E A J M Offermann Th Pospischil M Potokar A Rokavec A W Richter G Rosner P Sauer S Schardt H Schmieden S Sirca L Tiator B Vodenik A Wagner Th Walcher S Wolf |
| Institution: | 1. Institut für Kernphysik, Universit?t Mainz, D-55099, Mainz, Germany 2. TH Darmstadt, Institut für Kernphysik, D-64289, Darmstadt, Germany 3. Institut “Jo?ef Stefan”, University of Ljubljana, Slovenia |
| Abstract: | The reactione+p →> e+π ++n at c.m. energyW=1125MeV and momentum transfer Q2=0.117GeV2/c2 has been measured. The transverse and longitudinal structure functions have been separated by varying the polarization of the virtual photon (Rosenbluth plot) with a 3 to 4% error. In addition the longitudinal-transverse interference term has been determined measuring the right-left asymmetry with an accuracy of 3%. The experimental data are compared to model calculations, and the sensitivity of the results to the axial and pion formfactors is discussed. |
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