CP-tagged charm decays: relevance, status and prospects

Abstract

The analysis of quantum-correlated $D-\bar{D}$ decays produced at the $\psi (3770)$ resonance gives unique insight into quantities such as strong-phase differences and coherence factors. Knowledge of these parameters is invaluable for measurements of the CKM-angle $\gamma$ (${\varphi }_3$) in $B\to DK$ decays. Results from CLEO-c analyses performed at the $\psi (3770)$ resonance in a variety of decay channels are reported, and their consequences for the determination of $\gamma$ is assessed. Future prospects are given for extensions to the present studies.

Invited talk at Charm 2009, May 2009, Leimen, Germany. Given on behalf of the CLEO-c collaboration. (Footnote added.)