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arXiv · hep-ph/9602421

Charged Pion Polarizabilities to two Loops

Urs Buergi
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Abstract

We evaluate the electric and magnetic polarizabilities of charged pions in the framework of chiral perturbation theory at next-to-leading order. This requires a two-loop evaluation of the Compton amplitude near threshold. We estimate the two new low-energy constants which enter the chiral expansion at this order with resonance saturation. The numerical results are compared with presently available experimental information.

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Urs Buergi. 1996-02-28. Charged Pion Polarizabilities to two Loops. https://doi.org/10.1016/0370-2693(96)00304-8

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