EXTRACTION OF RESONANCE PARAMETERS AND ROLE OF THE FINAL STATE INTERACTIONS

We present an overview of the SAID group effort to analyze new γn → π-p cross sections vs. the world database to get new multipoles and determine neutron electromagnetic couplings. The differential cross section for the processes γn → π-p was extracted from new measurements at CLAS and MAMI-B accoun...

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Bibliographic Details
Published in:International journal of modern physics. Conference series 2014, Vol.26, p.1460082
Main Authors: STRAKOVSKY, IGOR I., BRISCOE, WILLIAM J., KUDRYAVTSEV, ALEXANDER E., TARASOV, VLADIMIR E.
Format: Article
Language:English
Subjects:
Couplings
Cross-sections
Motion effects
Multipoles
Photoproduction
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Summary:We present an overview of the SAID group effort to analyze new γn → π-p cross sections vs. the world database to get new multipoles and determine neutron electromagnetic couplings. The differential cross section for the processes γn → π-p was extracted from new measurements at CLAS and MAMI-B accounting for Fermi motion effects in the impulse approximation (IA) as well as NN- and πN-FSI effects beyond the IA. We evaluated results of several pion photoproduction analyses and compared πN PWA results as a constraint for analyses of pion photoproduction data (Watson's theorem).
ISSN:2010-1945
2010-1945
DOI:10.1142/S2010194514600829