Effect of Sigma-beam Asymmetry Data on Fits to Single Pion Photoproduction off Neutron
I.I. Strakovsky, R.A. Arndt, W.J. Briscoe, M.W. Paris, R.L. Workman, (GWU)
TL;DR
This paper examines how new GRAAL Sigma-beam asymmetry data impacts multipole fits in single-pion photoproduction off neutrons, highlighting the importance of polarization measurements in refining theoretical models.
Contribution
It introduces the influence of recent polarization data on multipole analysis of neutron photoproduction, enhancing understanding of nucleon resonance structures.
Findings
Sigma-beam asymmetry data significantly alters multipole fit results
Polarization measurements improve the accuracy of photoproduction models
Comparison with double-polarization data validates the fit adjustments
Abstract
We investigate the influence of new GRAAL Sigma-beam asymmetry measurements on the neutron in multipole fits to the single-pion photoproduction database. Results are compared to those found with the addition of a double-polarization quantity associated with the sum rule.
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