Using the CLEO magnetic detector at the Cornell Electron Storage Ring, we find B(ϒ(2S)→μ+μ−)=0.018±0.008 (statistical) ±0.005 (systematic) and B(ϒ(2S)→τ+τ−)=0.017 ±0.015±0.006.
DOI:https://doi.org/10.1103/PhysRevD.30.1996
©1984 American Physical Society
Vol. 30, Iss. 9 — 1 November 1984
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