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arXiv · hep-ph/0201033

Electromagnetic Corrections to Charged Pion Scattering at Low Energies

M. Knecht·A. Nehme
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Abstract

The electromagnetic corrections to the low energy scattering amplitude involving charged pions only are investigated at leading and next-to-leading orders in the two-flavour chiral expansion. As an application, the corresponding variation in the strong $2S-2P$ level shift is evaluated. The relative variation is of the order of 5%.

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M. Knecht, A. Nehme. 2002-01-07. Electromagnetic Corrections to Charged Pion Scattering at Low Energies. https://doi.org/10.1016/s0370-2693(02)01499-5

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