Author/Authors :
M Büchler، نويسنده , , G Colangelo، نويسنده , , J Kambor، نويسنده , , F Orellana، نويسنده ,
Abstract :
It has been recently suggested that it is possible to calculate the effect of final state interactions in K→ππ amplitudes by applying dispersive methods to the amplitude with the kaon off-shell. We critically reexamine the procedure, and point out the effects of the arbitrariness in the choice of the off-shell field for the kaon.
