| Issue |
EPJ Web Conf.
Volume 130, 2016
MESON 2016 – 14th International Workshop on Meson Production, Properties and Interaction
|
|
|---|---|---|
| Article Number | 03009 | |
| Number of page(s) | 5 | |
| Section | 03 Physics of the η meson - contributions | |
| DOI | https://doi.org/10.1051/epjconf/201613003009 | |
| Published online | 29 November 2016 | |
https://doi.org/10.1051/epjconf/201613003009
Recent Results from Photoproduction of Mesons in A2
University of Basel Basel, Switzerland
* e-mail: natalie.walford@unibas.ch
Published online: 29 November 2016
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 of neutrons in certain states. Hence, a complete partial wave analysis (PWA) can assist in yielding more information about any reaction, but gains from polarization observables constraining the fits. 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 resonances. Preliminary results of polarization observables (E, T, and F) of η and double π production off a polarized neutron (dButanol) target are shown with comparison to predictions of recent multipole analyses. These results will allow for developing the world database.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.