Abstract
Using the CLEO detector at the Cornell Electron Storage Ring, the authors have measured the leptonic branching fractions, B, of the '(1S), '(2S), and '(3S) to be 2.7±0.3±0.3%, 1.9±1.3±0.5%, and 3.3±1.3±0.7%, respectively. Combining these values of B with previous measurements of the leptonic widths of these resonances, the authors find the total widths of the '(1S), '(2S), and '(3S) to be 48±4±4, 27±17±6, and 13±4±3 keV.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 807-810 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 50 |
| Issue number | 11 |
| DOIs | |
| State | Published - 1983 |
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