Abstract
We quantitatively study dispersion relations giving the phase of a strong scattering amplitude from its momentum dependence. We consider -odd contributions to neutral kaon scattering (regeneration) where accurate measurements of both amplitudes and phases are available. We find, somewhat surprisingly, that, even including many possibly corrupting effects, the uncertainty is well below 1°. This allows an accurate determination of the phase in kaon decay to test ; conversely, assuming symmetry, new phenomena can be limited.
- Received 16 December 1994
DOI:https://doi.org/10.1103/PhysRevLett.75.402
©1995 American Physical Society