Abstract
The decay Ï(2S)â†Î•J/Ï is used to measure, for the first time, all prominent Ε-meson branching fractions with the same experiment in the same dataset, thereby providing a consistent treatment of systematics across branching fractions. We present results for Ε decays to ÎÎ, Ï€+Ï€- Ï€0, 3Ï€0, Ï€+Ï€-Î and e+e-Î, accounting for 99.9% of all Ε decays. The precision of several of the branching fractions and their ratios is improved. Two channels, Ï€+Ï€-Î and e+e-Î show results that differ at the level of three standard deviations from those previously determined.
| Original language | English |
|---|---|
| Article number | 122001 |
| Journal | Physical Review Letters |
| Volume | 99 |
| Issue number | 12 |
| DOIs | |
| State | Published - Sep 18 2007 |
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