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arXiv · hep-ph/9810202

Compton scattering by pion: there is no room for the off-shell effects

A. E. Kaloshin
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Abstract

We show that the off-shell contributions in Compton scattering by pion may exist only in the single exchange diagrams. These contributions are canceled completely in the total gauge-invariant amplitude as it confirmed by one-loop calculations. It explains, in particular, some results of the chiral pertubation theory in the order $p^4$ but this cancelation has no relation to chiral symmetry.

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A. E. Kaloshin. 1998-10-01. Compton scattering by pion: there is no room for the off-shell effects. https://arxiv.org/abs/hep-ph/9810202

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