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Bottom ; Life Time

  1. Overview
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    1. Life Time
      Test of Heavy-Quark Expansion.

      Updated results with 195pb-1 (J/ψ mode)

        • τ(B+)=1.66 ±0.04(stat) ±0.02(sys) ps (cτ=499μm)
        • τ(B0)=1.49 ±0.05(stat) ±0.03(sys) ps (cτ=446μm)
            → τ(+)/τ(0) = 1.119 ±0.046(stat) ±0.014(sys)

      ⇔ HQE; τ(+)/τ(0) = 1.06 ±0.02

      τ(Bs)       = 1.33 ±0.14(stat) ±0.02(sys) ps with 138pb-1
      is slightly smaller than HQE prediction of τ(Bs) ∼ τ(Bd)
    2. Mass
    3. Branching Ratio
    4. CP violation and Mixing
yoshiaki.fujii@kek.jp, Mar.27,2004 at JPS Kyushu