Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-05-04
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages Latex, Lake Louise Winter Institute 1999 Conference Proceedings
Scientific paper
The CLEO collaboration reported observation of the `wrong sign' decay $D^0 \to K^+\pi^-$ in 1993. Upgrades have been made to the CLEO detector, including installation of a silicon vertex detector, which provide substantial improvements in sensitivity to $D^0 \to K^+\pi^-$. The vertex detector enables the reconstruction of the proper lifetime of the $D^0$, and so provides sensitivity to $D^0-\bar{D}^0$ mixing. We will give preliminary results on the rate of `wrong sign' decay and $D^0-\bar{D}^0$ mixing using data from the $9.1 fb^{-1}$ of integrated luminosity that has been accumulated with the upgrades in place. In addition, we will give sensitivity estimates of on-shell $D^0-\bar{D}^0$ mixing derived from measurement of the lifetime measured with decays of the $D^0$ to CP eigenstates such as $K^+K^-, \pi^+\pi^-$, and $K_S\phi$.
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