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Sanchis Lozano, Miguel Ángel | |||
Aquest document és un/a article, creat/da en: 2007 | |||
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We present a proposal for detecting new physics at a B-factory running on 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)→pi+π−Υ(1S,2S); Υ(1S,2S)→ℓ+ℓ−, ℓ=e,μ,τ. | |||
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