2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47579At the first PPPP workshop, I gave a review talk on physics of B and CP-phases. In my talk, I explained DRG method and our extension to extract CP angles $α$ and $γ$ from measurements of the decay rates of $B_{d,s}^0 \to ππ, πK, K K$. There are several advantages to this extension: discrete ambiguities are removed, fewer assumptions are necessary, and the method works even if all strong phases vanish. I also talked on several other topics.LaTeX 9 pages, Talk given at the APCTP Workshop on Pacific Particle Physics Phenomenology, Oct 31 -- Nov 2, 1997. Seoul KoreaHigh Energy Physics - Phenomenologytext