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Electromagnetic Corrections to Charged Pion Scattering at Low Energies

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 Added by Abbas Nehme
 Publication date 2002
  fields
and research's language is English




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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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