Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster - Hadronenstruktur und -spektroskopie

HK 54.14: Poster

Wednesday, March 6, 2013, 16:45–19:00, HSZ 3.OG

Measurement of Polarization Observables T, P, and H in Pseudoscalar Meson Photoproduction with the CBELSA/TAPS Experiment — •Jan Hartmann — HISKP, Universität Bonn

In order to extract the contributing resonances in photoproduction experiments, partial wave analyses need to be performed. Here, a complete experiment is required to unambiguously determine the contributing amplitudes. This involves the measurement of carefully chosen single and double polarization observables.

The Crystal Barrel/TAPS experiment with a longitudinally or transversely polarized target and an energy tagged, linearly or circularly polarized photon beam allows the measurement of a large set of polarization observables. Due to its good energy resolution, high detection efficiency for photons, and the nearly complete solid angle coverage it is ideally suited for the measurement of photoproduction of neutral mesons decaying into photons.

Preliminary results for the target asymmetry T, recoil polarization P and the double polarization observable H will be presented for π⁰ and η photoproduction off the proton.

Supported by DFG within CRC16