Search For the Lepton-Flavor Violating Decays Y(3S)-]e Tau and Y(3S)-]mu Tau

Search For the Lepton-Flavor Violating Decays Y(3S)-]e Tau and Y(3S)-]mu Tau
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Total Pages: 15
Release: 2008
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Charged lepton-flavor violating processes are extremely rare in the Standard Model, but they are predicted to occur in several beyond-the-Standard Model theories, including Supersymmetry or models with leptoquarks or compositeness. We present a search for such processes in a sample of 117 x 106 [Upsilon](3S) decays recorded with the BABAR detector. We place upper limits on the branching fractions BF([Upsilon](3S) 2!e{sup {+-}}[tau]{sup {-+}})

Search for Lepton Flavor Violation in the Decays Tau-]e Gamma and Tau-]mu Gamma

Search for Lepton Flavor Violation in the Decays Tau-]e Gamma and Tau-]mu Gamma
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Total Pages: 7
Release: 2010
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Searches for lepton-flavor-violating decays of a [tau] lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 ± 7) x 106 [tau] decays collected by the BABAR detector near the [Upsilon](4S), [Upsilon](3S) and [Upsilon](2S) resonances. The searches yield no evidence of signals and they set upper limits on the branching fractions of [Beta]([tau]{sup {+-}} 2!e{sup {+-}}[gamma])

Searches for Lepton Flavor Violation in the Decays Tau+- ---] E+- Gamma and Tau+- ---] Mu+- Gamma

Searches for Lepton Flavor Violation in the Decays Tau+- ---] E+- Gamma and Tau+- ---] Mu+- Gamma
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Total Pages: 7
Release: 2010
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Searches for lepton-flavor-violating decays of a? lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 ± 7) x 106? decays collected by the BABAR detector near the?(4S),?(3S) and?(2S) resonances. The searches yield no evidence of signals and they set upper limits on the branching fractions of?(?{sup {+-}} → e{sup {+-}}?)

Search for Lepton Flavor Violating Decays Tau to L \omega (l

Search for Lepton Flavor Violating Decays Tau to L \omega (l
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Publisher:
Total Pages: 7
Release: 2007
Genre:
ISBN:

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−1 of ee− 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 {+-}} 2!e{sup {+-}}[omega])