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) |
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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)