Threshold Pion Photo- and Electroproduction in Chiral Perturbation Theory
classification
✦ hep-ph
nucl-th
keywords
electroproductionphoto-pionsomethresholdchiralcomplementarydiscuss
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I present some recent results on neutral pion photo- and electroproduction in the threshold region and discuss the low energy theorem for $E_{0+}$ and some novel ones for the $P$-waves. I also study the two-pion production process $\gamma N \to \pi \pi N$ from which complementary information can be gained.
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