Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 56: Hadron Structure and Spectroscopy 11
HK 56.1: Gruppenbericht
Donnerstag, 26. März 2015, 14:30–15:00, T/SR25
Baryon Spectroscopy: Recent Photoproduction Results from the CBELSA/TAPS Experiment — •Andrew Wilson for the CBELSA/TAPS collaboration — HISKP, University of Bonn, Nussallee 14-16, 53115 Bonn
The recent results from the CBELSA/TAPS experiment show how there is still much to learn about the baryon resonances. Using photon beams up to 3.2 GeV in energy from the ELSA accelerator in Bonn, our experiment is providing crucial information on the baryons with masses up to 2.5 GeV/c2. Since baryon resonances are broad and therefore overlapping, in addition to unpolarized cross sections the measurement of polarization observables are essential for the identification of these states. To measure these observables, this experiment utilizes polarized photon beams, polarized targets, and an excellent reconstruction efficiency for mesons decaying to photons. Our results, which feature several double polarization observables, show how the state-of-the-art partial wave analyses can be updated and more can be learned about the pattern and decays of baryon resonances.
Supported by the Deutsche Forschungsgemeinschaft (SFB/TR16)