Pion distorted waves in the eikonal approximation near the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Δ</mml:mi></mml:mrow><mml:mrow><mml:mn>33</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>resonance region

A quick way of calculating pion distorted waves in the ${\ensuremath{\Delta}}_{33}$ resonance region using eikonal approximation to the pion wave function is...