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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Elektromagnetische und Hadronische Sonden

HK 17.6: Vortrag

Dienstag, 13. März 2007, 18:15–18:30, A

Beam Single Spin Asymmetry in photon and pion electroproduction in the Delta resonance region — •Luca Doria für die A1 Kollaboration — Johannes Gutenberg-Universität, Mainz, Germany

The beam single spin asymmetry in the electroproduction of photons (or virtual compton scattering) and pions is measured at MAMI. The measurements are done in the Delta resonance region at Q²=0.35 (GeV/c)². The experiment is performed using the three spectrometer setup of the A1 Collaboration in conjunction with the highly polarized and 100% duty-cycle beam delivered by the MAMI accelerator. The results are compared to the Dispersion Relation model for photon electroproduction and to the MAID model for pion electroproduction. A qualitative agreement between data and theory is found.