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

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

2006-10-04

arxiv.org/abs/hep-ph/0610046v2

J.Phys.Soc.Jap.76:044101-044200,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures, Contributed paper to BNM2006 Workshop, September 13-14, 2006, KEK

Scientific paper

10.1143/JPSJ.76.044101

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

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