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
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.
