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arXiv 1108.0695hep-ex
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在CDF上测量B -> K(*)μ + μ-衰变的角分布

Measurements of the Angular Distributions in the Decays B -> K(*) mu+ mu- at CDF

CDF Collaboration, T. Aaltonen

摘要:

我们重建了衰变B -> K(*)mu+ mu-,并使用对应于积分亮度为6.8fb-1的数据样本测量了它们在sqrt{s}=1.96TeV的ppbar碰撞中的角分布。首次测量了B_0-> K ~*0 μ + μ-和B ~+ -> K ~*+ μ + μ-衰变的横向极化不对称性AT(2)和时间反演奇电荷宇称不对称性Aim,以及K ~* 纵向极化分数FL和μ子前后不对称性AFB。我们的结果是迄今为止最准确的,与其他实验的结果一致。

英文摘要:

We reconstruct the decays B -> K(*) mu+ mu- and measure their angular distributions in ppbar collisions at sqrt{s}=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb-1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry Aim are measured for the first time, together with the K* longitudinal polarization fraction FL and the muon forward-backward asymmetry AFB, for the decays B0 -> K*0 mu+ mu- and B+ -> K*+ mu+ mu-. Our results are among the most accurate to date and consistent with those from other experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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