Abstract
Knowledge of the decay fraction of the resonance, , is important for meson studies at the energy. Using a data sample collected by the CLEO III detector at CESR consisting of on the resonance, on the and in the continuum below the , we measure and ; the ratio of the two rates is (). This is the first measurement of the meson yield from the . Using these rates, and a model dependent estimate of , we determine . We also update our previous independent measurement of made using the inclusive yields to now be , due to a better estimate of the number of hadronic events. We also report the total hadronic cross section above continuum to be . This allows us to extract the fraction of mesons as , equal to 1-. Averaging the three methods gives a model dependent result of .
4 More- Received 12 October 2006
DOI:https://doi.org/10.1103/PhysRevD.75.012002
©2007 American Physical Society