Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-12-05
Chinese Physics C,2008,32(12)
Physics
High Energy Physics
High Energy Physics - Experiment
6 pages, 7 figures
Scientific paper
We established a method on measuring the $\dzdzb$ mixing parameter $y$ for BESIII experiment at the BEPCII $e^+e^-$ collider. In this method, the doubly tagged $\psi(3770) \to D^0 \overline{D^0}$ 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 $e/\pi$ 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.
Huang Bin
Li Wei-Dong
Zheng Yang-Heng
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