An improved hadronic model for pion electroproduction
نویسندگان
چکیده
منابع مشابه
Improved Description of Threshold Pion Electroproduction in Chiral Perturbation Theory
We investigate neutral pion electroproduction off protons in the framework of heavy baryon chiral perturbation theory. The chiral expansion of the S–wave multipoles E0+ and L0+ is carried out to three orders. There appear several undetermined low– energy constants. Three are taken from a recent study of the new TAPS threshold π0 photoproduction data, one is fixed from the proton Dirac form fact...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2020
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2020.135581