| Issue |
EPJ Web of Conferences
Volume 73, 2014
MENU 2013 – 13th International Conference Meson-Nucleon Physics and the Structure of the Nucleon
|
|
|---|---|---|
| Article Number | 04003 | |
| Number of page(s) | 6 | |
| Section | Baryon Resonances | |
| DOI | https://doi.org/10.1051/epjconf/20147304003 | |
| Published online | 09 June 2014 | |
https://doi.org/10.1051/epjconf/20147304003
SAID analysis of meson photoproduction: Determination of neutron and proton EM couplings
1 Institute for Nuclear Studies, Department of Physics, The George Washington University, Washington, DC 20052, USA
2 Institute of Theoretical and Experimental Physics, Moscow 117259, Russia
a e-mail: igor@gwu.edu
Published online: 9 June 2014
We present an overview of the GW SAID group effort to analyze on new pion photoproduction on both proton- and neutron-targets. The main database contribution came from the recent CLAS and MAMI unpolarized and polarized measurements. The differential cross section for the processes γn → π−p was extracted from new measurements accounting for Fermi motion effects in the impulse approximation (IA) as well as NN- and πN effects beyond the IA. The electromagnetic coupling results are compared to other recent studies.
© Owned by the authors, published by EDP Sciences, 2014
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