Abstract
Using the Crystal Ball detector operating at the DORIS II storage ring we have measured the leptonic partial widths G{cyrillic}ee of the Υ(1 S) and Υ(2 S) resonances. We find {Mathematical expression} and {Mathematical expression} The effect on G{cyrillic}ee of applying different prescriptions for radiative corrections is discussed. We also measure R, the ratio of non-resonant hadronic cross section to the Born cross section of μ pair production, at c.m. energy W=9.39 GeV to be R=3.48±0.04±0.16.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 49-61 |
| Number of pages | 13 |
| Journal | Zeitschrift für Physik C Particles and Fields |
| Volume | 40 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 1988 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)