| The study of B→K()l+l- decays in family non-universal Z' models |
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| 引用本文： | 蒋正伟,李润辉,吕才典.The study of B→K()l+l- decays in family non-universal Z' models[J].中国物理 C,2012,36(1). |
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| 作者姓名： | 蒋正伟 李润辉 吕才典 |
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| 作者单位： | 1. Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, P.O. Box 918(4), Beijing 100049, China;;2. Department of Physics and Center for Mathematics and Theoretical Physics, National Central University, Chungli 320, China;;3. Institute of Physics, AS, Taipei 115, China;;4. School of Physics, Shandong University, Jinan 250100, China |
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| 摘 要： | In a combined investigation of B→K(*)l+l- decays, constraints on the related couplings in family non-universal Z' models are derived. We find that within the allowed parameter space, the recently observed forward-backward asymmetry in the B→K(*)l+l- decay can be explained by flipping the signs of the Wilson coefficients C9eff and C10. With the obtained constraints, we also calculate the branching ratio of the Bs→μ+μ- decay. The upper bound of our prediction is nearly an order of magnitude smaller than the upper bound given by the CDF Collaboration recently.
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| 关 键 词： | forward-backward asymmetry new physics semi-leptonic decay |
| 收稿时间： | 2011-4-14 |
| 修稿时间： | 2011-6-20 |
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