Improved Measurement of the Branching Fraction and Energy Spectrum of eta' from Upsilon(1S) Decays

O. Aquines, CLEO Collaboration

We present an improved measurement of the ${\eta }^{\prime }$ meson energy spectrum in ${\rm Y}(1S)$ decays, using 1.2 fb^{-1} of data taken at the ${\rm Y}(1S)$ center-of-mass energy with the CLEO III detec…