Article ID Journal Published Year Pages File Type
10723093 Physics Letters B 2010 6 Pages PDF
Abstract
A nonrelativistic effective theory to describe the electroproduction reaction of a single pion on the nucleon at leading order in the electromagnetic coupling is constructed. The framework is tailored to accurately describe the cusp generated by the pion and nucleon mass differences. The S- and P-wave multipole amplitudes at two loops for all four reaction channels are provided. As an application, a new low energy theorem is discussed.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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