Abstract
We report on a study of the invariant mass spectrum of the hadronic system in the decay This study was performed with data obtained with the CLEO II detector operating at the CESR collider. We present fits to phenomenological models in which resonance parameters associated with the and mesons are determined. The spectral function inferred from the invariant mass spectrum is compared with data on as a test of the conserved vector current theorem. We also discuss the implications of our data with regard to estimates of the hadronic contribution to the muon anomalous magnetic moment.
- Received 21 October 1999
DOI:https://doi.org/10.1103/PhysRevD.61.112002
©2000 American Physical Society