Abstract
Using the CLEO II detector, we have measured the branching fractions for ϒ(3S)→ππϒ(1S), ϒ(3S)→ππϒ(2S), and the cascade ϒ(3S)→ϒ(2S)+X, ϒ(2S)→π+π−ϒ(1S), analyzing the exclusive mode where the daughter ϒ state decays to a e+e− or μ+μ− pair, as well as the inclusive π+π− transitions where the final ϒ state decays into hadrons. Properties of the ππ system are analyzed. Searches for the cascade decay ϒ(3S)→π+π−hb, hb→γηb and ϒ(3S)→π0hb were also performed.Received 8 July 1993DOI:https://doi.org/10.1103/PhysRevD.49.40©1994 American Physical Society
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