Pion Production at Threshold as Test of Chiral Perturbation Theory
An overview of recent results in threshold pion production is given. While the photoproduction data are in impressive agreement with calculations in the framework of Chiral Perturbation Theory, electroproduction data at low four-momentum transfer show severe deviations from these calculations.
KeywordsChiral Perturbation Theory Pion Production Decay Photon Pion Photoproduction Photoproduction Data
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