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The CP violation in the D system is predicted to be an unobserved level in the Standard Model. In this paper, we describe the method of searching for CP violation decay processes with the coherently produced D00 mesons from the ψ(3770) decay. The CP violation decay processes can be searched for at the BES-III experiment. The experimental sensitivity for searching for the CP violation can reach about a 10-4 level with a ψ(3770) data sample of about 20 fb-1. 相似文献
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利用四输出闪烁描迹仪(50cm×50cm×0.5cm)输出信号的时间关系得到粒子的两维定位. 获得了140—360ps的时间分辨率(标准偏差), 相应于位置分辨率(标准偏差)为2—5cm. 相似文献
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We present the physics program of the open charm and heavy cc states above the DD production energy threshold, which will be studied with the BES-Ⅲ detector at the BEPC- Ⅱ collider in the coming years. Based on some full Monte Carlo simulations with the BES-Ⅲ detector, we predict the accuracy levels on measuring some physical quantities related to D^0, D^+ and Ds^+ decays as well as some non-charmed decays of the heavy cc states. 相似文献
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