Köln 2004 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 27: Electromagnetic and Hadronic Probes IV

HK 27.2: Vortrag

Mittwoch, 10. März 2004, 11:15–11:30, E

Status of the GDH-Experiment on the deuteron at MAMI — •Andreas Thomas — Institut f"ur Kernphysik Universit"at Mainz

A pilot experiment to determine the helicity dependend total and partial photoabsorption cross sections had been carried out in 1998 at MAMI. The full data taking period was sucessfully finished in the first half of 2003. We have used the circularly polarized energy marked photons of the Mainz A2 tagging facility. For this experiments the Bonn-Bochum frozen spin was integrated into the 4 π DAPHNE detector.

In this talk the experimental setup, preliminary results of the pilot experiment and the status of the data analysis will be presented.