Charge Asymmetry of Same-Sign Dileptons in $B^0$-$\bar{B}^0$ Mixing

E. Nakano; et al. (for the Belle Collaboration)

arxiv: hep-ex/0505017 · v1 · pith:PM5M2OEKnew · submitted 2005-05-09 · ✦ hep-ex

Charge Asymmetry of Same-Sign Dileptons in B⁰-bar{B}⁰ Mixing

E. Nakano , et al. (for the Belle Collaboration) This is my paper

classification ✦ hep-ex

keywords asymmetrychargedatadileptonsmixingrecordedresonancesame-sign

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We report a measurement of the charge asymmetry for same-sign dileptons in $B^0$-$\bar{B}^0$ mixing, $A_{\rm sl}$. The data were collected with the Belle detector at KEKB. Using a data sample of 78 fb$^{-1}$ recorded at the $\Upsilon(4S)$ resonance and 9 fb$^{-1}$ recorded at an energy 60 MeV below the resonance, we measure $A_{\rm sl} = (-1.1 \pm 7.9(\text{stat}) \pm 7.0(\text{sys}))\times 10^{-3}$.

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