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2009-07-10

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/138323

Improved Limits on Lepton-Flavor-Violating τ Decays to ℓϕ, ℓρ, ℓK∗, and ℓ¯¯¯¯K∗

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https://doi.org/10.1103/PhysRevLett.103.021801

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.

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Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Improved Limits on Lepton-Flavor-Violating τ Decays to ℓϕ, ℓρ, ℓK∗, and ℓ¯¯¯¯K∗. Physical Review Letters. 2009. Vol. 103, num. 2, pags. 021801. ISSN 0031-9007. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/138323

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