| Search for new physics in the B→K^（＊）l^＋l^- decays at BABAR |
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| 作者姓名： | 孙亮 (for the BABAR collaboration) |
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| 作者单位： | Institut de Physique Nucleaire de Lyon, Villeurbanne 69622, France |
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| 基金项目： | I would like to thank my BABAR collaborators for insightful discussions and the conference organizers for their hospitality. |
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| 摘 要： | Based on a data sample of 384 million BB pairs collected with the BABAR detector at the PEP-Ⅱ asymmetric e ＋ e ￣ storage ring,we measure branching fractions,direct CP,isospin and lepton-flavor asymmetries for the rare decays B → K （＊） l ＋ l￣ in two di-lepton mass bins above and below the J/ψ resonance.For the B → K＊ l ＋ l￣ decay,we also measure the K＊ longitudinal polarization fraction and the di-lepton forwardbackward asymmetry.
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| 关 键 词： | 轻子衰变 物理学 搜索 不对称 样本检测 轻子质量 PEP 储存环 |
| 收稿时间： | 2010-02-04 |
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