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2010-04-16

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/135278

Search for Charged Lepton Flavor Violation in Narrow Υ Decays

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https://doi.org/10.1103/PhysRevLett.104.151802

Abstract

Charged-lepton flavor-violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99 × 10 6 Υ ( 2 S ) decays and 117 × 10 6 Υ ( 3 S ) decays collected with the BABAR detector. We place upper limits on the branching fractions B ( Υ ( n S ) → e ± τ ∓ ) and B ( Υ ( n S ) → μ ± τ ∓ ) ( n = 2 , 3 ) at the 10 − 6 level and use these results to place lower limits of order 1 TeV on the mass scale of charged-lepton flavor-violating effective operators.

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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. Search for Charged Lepton Flavor Violation in Narrow Υ Decays. Physical Review Letters. 2010. Vol. 104, num. 15, pags. 151802. ISSN 0031-9007. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/135278

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