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arXiv 1708.04474hep-phhep-ex
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用$B^0\to K^{*0}μ^+μ^-$衰变直接测定Wilson系数

Direct determination of Wilson coefficients using $B^0\to K^{*0}μ^+μ^-$ decays

T. Hurth, C. Langenbruch, F. Mahmoudi

摘要:

本文提出了一种利用$B^0\to K^{*0}μ^+μ^-$衰变在无面元极大似然拟合中直接确定稀有$b\to s$跃迁Wilson系数的方法。该方法具有几个优点相比,传统的确定威尔逊系数的角度观测值,确定在箱的$q^2$,平方的质量的双μ子系统。该方法以最佳方式使用所有实验信息,并自动考虑实验相关性。进行伪实验,我们表明所提出的方法的威尔逊系数的灵敏度提高。我们还证明,它将有可能使用的方法与LHCb实验所采取的组合运行1和2的数据样本。

英文摘要:

A method to directly determine the Wilson coefficients for rare $b\to s$ transitions using $B^0\to K^{*0}μ^+μ^-$ decays in an unbinned maximum likelihood fit is presented. The method has several advantages compared to the conventional determination of the Wilson coefficients from angular observables that are determined in bins of $q^2$, the square of the mass of the dimuon system. The method uses all experimental information in an optimal way and automatically accounts for experimental correlations. Performing pseudoexperiments, we show the improved sensitivity of the proposed method for the Wilson coefficients. We also demonstrate that it will be possible to use the method with the combined Run 1 and 2 data sample taken by the LHCb experiment.

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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