Hadronic Phases and Isospin Amplitudes in $D(B)\to \pi \pi$ and $D(B)\to K\bar{K}$ Decays

J. -M. Gerard, J. Pestieau, J. Weyers

Hadronic phase in $\pi \pi$ and $K\bar{K}$ channels are calculated a la Regge. At the D mass one finds ${\delta }_{\pi \pi }\approx \pi /3$ and ${\delta }_{K\bar{K}}\approx -\pi /6$ in good agreement with the CL…