Observation of $\Upsilon(4S) decays to$\pî+pî-\Upsilon(1S)$ and $\pî+pî-\Upsilon(1S)$ [electronic resource]
The authors present the first measurement of Υ(4S) decays to π⁺π⁻ Υ(1S) and π⁺π⁻ Υ(2S) based on a sample of 230 x 10⁶ Υ(4S) mesons collected with the BABAR detector. They measure the product branching fractions Β(Υ(4S) → π⁺π⁻ Υ(1S)) x Β(Υ(1S) → μ⁺μ⁻) = (2.23 ± 0.25{sub stat} ± 0.27{sub sys}) x 10⁻⁶...
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Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C : Oak Ridge, Tenn. :
United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
2006.
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| Subjects: |
Internet
Online AccessOnline
| Call Number: |
E 1.99:slac-pub-11817
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| E 1.99:slac-pub-11817 | Available |