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Improved Limits on Lepton-Flavor-Violating tau Decays to l phi , l rho , lK^{*}, and lK[over -bar]^{*}

Author(s)
Fisher, Peter H.; Zhao, M.; Yamamoto, R. K.; Spitznagel, M.; Sciolla, Gabriella; Henderson, Shawn Wesley; Dujmic, Denis; Cowan, Ray Franklin; ... Show more Show less
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Alternative title
Improved Limits on Lepton-Flavor-Violating τ Decays to ℓϕ, ℓρ, ℓK*, and ℓK̅ *
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
We search for the neutrinoless, lepton-flavor-violating tau decays τ[over-bar]→ℓ[over-bar]V[superscript 0], where ℓ is an electron or muon and V[superscript 0] is a vector meson reconstructed as ϕ→K[superscript +]K[superscript -], ρ→π[superscript +]π[superscript -], K[superscript *]→K[superscript +]π[superscript -], K[over-bar][superscript *]→K[superscript -]π[superscript +]. The analysis has been performed using 451  fb[superscript -1] of data collected at an e[superscript +]e[superscript -] center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II storage rings. The number of events found in the data is compatible with the background expectation, and upper limits on the branching fractions are set in the range (2.6–19)×10[superscript -8] at the 90% confidence level.
Date issued
2009-07
URI
http://hdl.handle.net/1721.1/53416
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Improved Limits on Lepton-Flavor-Violating tau Decays to l phi , l rho , lK^{*}, and lK[over -bar]^{*}.” Physical Review Letters 103.2 (2009): 021801. © 2009 The American Physical Society.
Version: Final published version
ISSN
0031-9007

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