Updated SAID analysis of pion photoproduction data
Ron L. Workman, William J. Briscoe, Mark W. Paris, and Igor I., Strakovsky (GWU)
TL;DR
This paper updates the analysis of pion photoproduction data with new fits, revised resonance couplings, and discusses the impact of recent measurements and future challenges.
Contribution
It provides an updated energy-dependent and single-energy analysis of pion photoproduction data up to 2.7 GeV, including revised resonance couplings and assessment of recent measurements.
Findings
Revised resonance photo-decay couplings obtained.
Impact of recent measurements analyzed.
Remaining issues and future directions discussed.
Abstract
Energy-dependent and single-energy fits to the existing pion photoproduction database have been updated to cover the region from threshold to 2.7 GeV in the laboratory photon energy. Revised resonance photo-decay couplings have been extracted and compared to previous determinations. The influence of recent measurements is displayed. Remaining problems and future approaches are discussed.
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