Precision determination of the CKM angle $\gamma/\phi_3$ depends upon constraints on charm mixing amplitudes, measurements of doubly-Cabibbo suppressed amplitudes and relative phases, and studies of charm Dalitz plots tagged by flavor or CP eigenstates. In this note we describe the technique used at CLEO-c to constrain the $K_{ S,L}\pi\pi$ model uncertainty, and its impact on $\gamma/\phi_3$ measurements at B-factories presented at the Charm 2007 Workshop.
Categories: hep-ex