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arXiv 0704.0120hep-exhep-ph
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北京谱仪- III的强相和$D^0-D^0bar$混合

Strong Phase and $D^0-D^0bar$ mixing at BES-III

Xiao-Dong Cheng, Kang-Lin He, Hai-Bo Li, Yi-Fang Wang, Mao-Zhi Yang

备注：
6 pages, 1 figure, a typo fixed, add more reference and a few corrections
发表信息：
Phys.Rev.D75:094019,2007
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摘要：

最近，BaBar和Belle的实验都发现了中性$D$混合的证据。本文通过对$B$工厂的混合参数$y^\prime$、$y_{CP}$和$x$的测量，讨论了对$D^0 \to Kπ$衰变中强相位差的限制。本文对北京谱仪Ⅲ实验中混合参数$y$在$ψ(3770)$峰处的测量灵敏度进行了估算。我们还对混合率$R_M$的测量值作了估计。最后，利用BES-Ⅲ实验中的CP标记技术，利用$D\bar{D}$阈值附近的数据，得到了BES-Ⅲ强相位差的灵敏度。

英文摘要：

Most recently, both BaBar and Belle experiments found evidences of neutral $D$ mixing. In this paper, we discuss the constraints on the strong phase difference in $D^0 \to Kπ$ decay from the measurements of the mixing parameters, $y^\prime$, $y_{CP}$ and $x$ at the $B$ factories. The sensitivity of the measurement of the mixing parameter $y$ is estimated in BES-III experiment at $ψ(3770)$ peak. We also make an estimate on the measurements of the mixing rate $R_M$. Finally, the sensitivity of the strong phase difference at BES-III are obtained by using data near the $D\bar{D}$ threshold with CP tag technique at BES-III experiment.

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