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Updated: Sep 2, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Searches for Charged-Lepton-Flavor Violation in χ_{bJ}(1P) Decays
Abstract:
We report the first searches for charged-lepton-flavor violation in decays of χ_{bJ}(1P) (J=0, 1, and 2) to a pair of charged leptons using 158 million ϒ(2S) decays collected with the Belle detector in e^{+}e^{-} collisions at the KEKB collider. No significant signal is observed, and we set upper limits on the branching fractions for χ_{bJ}(1P) decays to e^{±}μ^{∓} at the level of 10^{-6} and to e^{±}τ^{∓} or μ^{±}τ^{∓} at the level of 10^{-5}. Limits on χ_{b0}(1P) decays are translated into bounds on the corresponding Wilson coefficients of scalar operators that mediate charged-lepton-flavor violation.
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