D^0 \to K^{\pm}π^{\mp} and CP Violation at a τ-charm Factory

Details D^0 \to K^{\pm}π^{\mp} and CP Violation at a τ-charm Factory D^0 \to K^{\pm}π^{\mp} and CP Violation at a τ-charm Factory

1995-12-03

arxiv.org/abs/hep-ph/9512216v2

Phys.Lett. B372 (1996) 317-325

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages. (Phys. Lett. B in press)

Scientific paper

We calculate the time-dependent and time-integrated decay rates of $(D^0\bar{D}^0)\rightarrow (K^{\pm}\pi^{\mp})(l^{\pm}X^{\mp})$ at the $\psi(3.77)$ and $\psi(4.14)$ resonances. The possibilities to distinguish between the effects of $D^0-\bar{D}^0$ mixing and doubly Cabibbo suppressed decay (DCSD) are illustrated, and the signal of $CP$ violation induced by the interplay of mixing and DCSD is discussed. Ratios of the decay rates of $(D^0\bar{D}^0)\rightarrow (K^{\pm}\pi^{\mp})(K^{\pm}\pi^{\mp})$ to that of $(D^0\bar{D}^0)\rightarrow (K^+\pi^-)(K^-\pi^+)$ are also recalculated by accommodating $CP$ violation and final-state interactions.

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