New Strategies to Extract Weak Phases from Neutral B Decays

Abstract

We discuss new, theoretically clean strategies to determine the angle $\gamma$ of the unitarity triangle from $B_d\to D{K}_{S(L)}$, $B_s\to D{\eta }^{{(}^{\prime })},D\varphi ,...$ decays, and point out that the $B_s\to D{K}_{S(L)}$ and $B_d\to D{\pi }^0,D{\rho }^0,...$ modes allow very interesting determinations of the $B_q^0$--$\overline{B_q^0}$ mixing phases ${\varphi }_s$ and ${\varphi }_d$, respectively. Their colour-allowed counterparts $B_s\to D_s^{(\ast )\pm }{K}^{\mp },...$ and $B_d\to D^{(\ast )\pm }{\pi }^{\mp },...$ also offer new methods to probe $\gamma$.

Comments: 8 pages, LaTeX, invited talk at the HEP2003 Europhysics Conference, Aachen, Germany, 17-23 July 2003, to appear in the proceedings