Search for Lepton Flavor Violating Decays τ ± → l ± ω

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Physical Review Letters(2008)

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摘要
A search for lepton flavor violating decays of a {tau} to a lighter-mass charged lepton and an {omega} vector meson is performed using 384.1 fb{sup -1} of e{sup +}e{sup -} annihilation data collected with the BABAR detector at the Stanford Linear Accelerator Center PEP-II storage ring. No signal is found, and the upper limits on the branching ratios are determined to be {beta}({tau}{sup {+-}} {yields} e{sup {+-}}{omega}) < 1.1 x 10{sup -7} and {beta}({tau}{sup {+-}} {yields} {mu}{sup {+-}}{omega}) < 1.0 x 10{sup -7} at 90% confidence level.
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关键词
Branching fraction,Omega,Lepton,Electron–positron annihilation,Particle decay,Vector meson,Annihilation,Particle physics,Electron,Nuclear physics,Physics
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