Search for the Lepton Flavour Violating Decay Tau-]e Gamma
Search for the Lepton Flavour Violating Decay Tau-]e Gamma

Author:

Publisher:

Published: 2008

Total Pages:

ISBN-13:

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A search is done on the entire BaBar data set for the neutrino-less tau decay tau->e gamma. No evidence for the decay is found and a 90% confidence level upper limit is determined to be 3.3 * 10^( -8) including systematic uncertainty. This measurement is a factor of three improvement from the previous best result from BaBar.

Search for the Lepton Flavour Violating Decay Tau-]e Gamma
Search for the Lepton Flavour Violating Decay Tau-]e Gamma

Author: Clayton Daniel Lindsay

Publisher:

Published: 2009

Total Pages:

ISBN-13:

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A search is done on the entire BaBar data set for the neutrino-less tau decay tau->e gamma. No evidence for the decay is found and a 90% confidence level upper limit is determined to be 3.3 * 10^( -8) including systematic uncertainty. This measurement is a factor of three improvement from the previous best result from BaBar.

Search for Lepton Flavour Violation in the Decay Tau +/- to Mu +/- Gamma
Search for Lepton Flavour Violation in the Decay Tau +/- to Mu +/- Gamma

Author: M. Roney

Publisher:

Published: 2004

Total Pages:

ISBN-13:

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A search for the lepton flavour violating decay {tau}{sup {+-}} {yields} {mu}{sup {+-}}{gamma} has been performed using 221.4 fb{sup -1} of data collected at an e{sup +}e{sup -} centre-of-mass energy of 10.58 GeV with the BABAR detector at the PEP-II storage ring. The search has an efficiency of 7.45 {+-} 0.65% for an expected background level of 6.2 {+-} 0.5 events. In the final sample 4 candidate events are selected. As there is no evidence for a signal in this data, for this preliminary result we set an upper limit of {Beta}({tau}{sup {+-}} {yields} {mu}{sup {+-}}{gamma})

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

Author:

Publisher:

Published: 2010

Total Pages: 7

ISBN-13:

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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])

Search for Lepton Flavor Violation in the Decay Tau -] Electron Gamma
Search for Lepton Flavor Violation in the Decay Tau -] Electron Gamma

Author:

Publisher:

Published: 2005

Total Pages: 7

ISBN-13:

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A search for the non-conservation of lepton flavor in the decay?{sup {+-}} → e{sup {+-}}? has been performed with 2.07 x 108 ee− →?+?− events collected by the BABAR detector at the PEP-II storage ring at a center-of-mass energy near 10.58 GeV. They find no evidence for a signal and set an upper limit on the branching ratio of?(?{sup {+-}} → e{sup {+-}}?)