Polarization Observables in eta and pi Production Using a Polarized Target with the Crystal Ball/TAPS at MAMI

Walford, Natalie K. and Dieterle, Manuel and Krusche, Bernd and Strub, Thomas and Witthauer, Lilian. (2016) Polarization Observables in eta and pi Production Using a Polarized Target with the Crystal Ball/TAPS at MAMI. In: 16th International Conference on Hadron Spectroscopy (Hadron 2015), 1735.

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Recent experiments using the Crystal Ball/TAPS setup at the MAMI accelerator in Mainz, Germany, continue to study the properties and the excitation spectrum of the nucleon with meson photoproduction. Electromagnetic excitations of the proton and neutron are essential for understanding their isospin decomposition. The electromagnetic coupling of photons to protons is different than that to neutrons in certain states. Hence, a complete partial wave analysis (PWA) can assist in yielding more information about any reaction, but requires the determination of polarization observables. Polarization observables play a crucial role as they are essential in disentangling the contributing resonant and non-resonant amplitudes, whereas cross section data alone is not sufficient for separating broad overlapping resonances. Preliminary results of polarization observables of η, single, and double π production off a polarized neutron (dButanol) target will be shown with comparison to predictions of recent multipole analyses. These results will greatly increase the world database on pseudoscalar meson production on neutrons.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Conference or Workshop Item
Conference or workshop item Subtype:Conference Paper
Publisher:AIP Publishing
Series Name:AIP Conference Proceedings
Note:Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:11 Oct 2017 12:32
Deposited On:15 Mar 2017 13:15

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