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Proposal for testing lepton universality in Upsilon decays at a B-factory running at $Υ(3S)$

Miguel-Angel Sanchis-Lozano
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Abstract

We present a proposal for detecting new physics at a B-factory running at the $Υ(3S)$ resonance by testing lepton universality to the few percent level in the leptonic decays of the $Υ(1S)$ and $Υ(2S)$ resonances tagged by the dipion in the chain decay: $Υ(3S) \to pi^+π^-Υ(1S,2S)$; $Υ(1S,2S) \to \ell^+\ell^-$, $\ell=e,μ,τ$.

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Miguel-Angel Sanchis-Lozano. 2007-02-26. Proposal for testing lepton universality in Upsilon decays at a B-factory running at $Υ(3S)$. https://doi.org/10.1143/jpsj.76.044101

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