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http://hdl.handle.net/2445/138323
Title: | Improved Limits on Lepton-Flavor-Violating τ Decays to ℓϕ, ℓρ, ℓK∗, and ℓ¯¯¯¯K∗ |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 10-Jul-2009 |
Publisher: | American Physical Society |
Abstract: | We search for the neutrinoless, lepton-flavor-violating tau decays τ − → ℓ − V 0 , where ℓ is an electron or muon and V 0 is a vector meson reconstructed as ϕ → K + K − , ρ → π + π − , K ∗ → K + π − , ¯¯¯¯ K ∗ → K − π + . The analysis has been performed using 451 fb − 1 of data collected at an e + e − 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 − 8 at the 90% confidence level. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.103.021801 |
It is part of: | Physical Review Letters, 2009, vol. 103, num. 2, p. 021801 |
URI: | http://hdl.handle.net/2445/138323 |
Related resource: | https://doi.org/10.1103/PhysRevLett.103.021801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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