Measurement of the decay τ-→π-π+π-2π0ντ
The decay τ−→π−π+π−2π0ντ has been observed in e+e− annihilation using the CLEO II detector at the Cornell Electron Storage Ring. In a data sample collected at √s ∼10.6 GeV, 668±38 decay candidates have been identified by exclusively reconstructing two π0’s accompanying three charged particles, which...
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1993
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| Online Access: | https://ink.library.smu.edu.sg/sis_research/5798 |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | The decay τ−→π−π+π−2π0ντ has been observed in e+e− annihilation using the CLEO II detector at the Cornell Electron Storage Ring. In a data sample collected at √s ∼10.6 GeV, 668±38 decay candidates have been identified by exclusively reconstructing two π0’s accompanying three charged particles, which are assumed to be pions. Normalizing to the number of τ pairs detected with one charged particle recoiling against three charged particles, this yields a branching ratio of B03π2π=(0.48±0.04±0.04)%. A signal of 430±33 events for the decay τ−→π−ωπ0ντ has also been observed, corresponding to a branching ratio of B0πωπ=(0.39±0.04±0.04)%. |
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