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Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Hauptvorträge III

HK 62.1: Hauptvortrag

Freitag, 18. März 2016, 10:45–11:15, S1/01 A1

Baryon Spectroscopy - Recent Results from the CBELSA/TAPS Experiment at ELSA — •Jan Hartmann for the CBELSA/TAPS collaboration — HISKP, Universität Bonn

One of the remaining challenges within the standard model is to gain a good understanding of QCD in the non-perturbative regime. A key step towards this aim is baryon spectroscopy, investigating the spectrum and the properties of baryon resonances. To gain access to resonances with small π N partial width, photoproduction experiments provide essential information. Partial wave analyses need to be performed to extract the contributing resonances. 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 CBELSA/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.

In this talk recent results for various double polarization observables in single- and multi-meson final states will be presented and their impact on the partial wave analysis will be discussed.

Supported by DFG within the SFB/TR16.

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