A simulation study on the measurement of D0-D0 mixing parameter y at BESⅢ |
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引用本文: | 黄彬,郑阳恒,李卫东.A simulation study on the measurement of D0-D0 mixing parameter y at BESⅢ[J].中国物理 C,2008,32(12):945-951. |
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作者姓名: | 黄彬 郑阳恒 李卫东 |
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摘 要: | We established a method on measuring the D0-D0 mixing parameter y for BESⅢ experiment at the BEPCⅡ e+e- collider. In this method, the doubly tagged π(3770) →D0-D0 events, with one D decays to CP-eigenstates and the other D decays semileptonically, are used to reconstruct the signals. Since this analysis requires good e/π separation, a likelihood approach, which combines the dE/dx, time of flight and the electromagnetic shower detectors information, is used for particle identification. We estimate the sensitivity of the measurement of y to be 0.007 based on a 20fb-1 fully simulated MC sample.
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关 键 词: | likelihood electron identification D0-D0 mixing mixing parameter y |
收稿时间: | 2008-5-29 |
修稿时间: | 2008-6-11 |
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