2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37485Results on the decays $B^{-} \to D_{CP}K^{-}$, $\bar{B^{0}} \to D^{(*)0}\bar{K}^{(*)0}$, $B^{0} \to D^{*\mp}π^{\pm}$ and their charge conjugates using data collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric $e^{+}e^{-}$ storage ring are reported. The implications for the determination of the weak phase $ϕ_{3}$ are discussed.5 pages, 3 figures,presented at XXXVIII Rencontres De Moriond, Electroweak and Unified Theories, Les Arcs, France, March 15-22, 2003High Energy Physics - ExperimentTowards a measurement of $ϕ_3$text