SAID analysis of meson photoproduction: Determination of neutron and proton EM couplings

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 gamma n arrow righ...

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Bibliographic Details
Published in:EPJ Web of conferences 2014-01, Vol.73, p.4003-1-04003-6
Main Authors: Strakovsky, Igor, Briscoe, William, Kudryavtsev, Alexander, Tarasov, Vladimir, Workman, Ron
Format: Article
Language:English
Subjects:
Accounting
Approximation
Couplings
Cross sections
Mathematical analysis
Photoproduction
Pions
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Summary: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 gamma n arrow right [pi] super(-) p was extracted from new measurements accounting for Fermi motion effects in the impulse approximation (IA) as well as NN- and [pi]N effects beyond the IA. The electromagnetic coupling results are compared to other recent studies.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/20147304003