Abstract
Finite-width corrections based on a generalized effective range formula for pion-pion scattering modify by a non-negligible amount the well-known relation between and derived on the basis of vector-meson dominance. We also present a new current-algebra prediction for the shape and magnitude of and estimate the -meson contribution to the Schwinger term.
- Received 17 May 1968
DOI:https://doi.org/10.1103/PhysRevLett.21.244
©1968 American Physical Society