Evidence for New Flavor Production at the Upsilon (4S)
Authors (1 total): J. Rohlf
An enhancement has been observed in the inclusive cross section for direct single electrons produced in e+e- annihilations at the ϒ(4S). This is interpreted as evidence for a new weakly decaying particle, the B meson. A branching ratio for B→Xeν of [13±3 (±3)]% is inferred, where the first set of errors is statistical and the estimated systematic error is enclosed in parentheses.