Abstract
In this Letter, we describe a search for lepton flavor violation (LFV) in the bottomonium system. We search for leptonic decays Υ(nS)→μτ (n=1, 2, and 3) using the data collected with the CLEO III detector. We identify the τ lepton using its leptonic decay ντν̄ee and utilize multidimensional likelihood fitting with probability density function shapes measured from independent data samples. We report our estimates of 95% C.L. upper limits on LFV branching fractions of Υ mesons. We interpret our results in terms of the exclusion plot for the energy scale of a hypothetical new interaction versus its effective LFV coupling in the framework of effective field theory.
Original language | English (US) |
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Article number | 201601 |
Journal | Physical review letters |
Volume | 101 |
Issue number | 20 |
DOIs | |
State | Published - Nov 14 2008 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy