2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200674We perform a global fits to charmless $B \to PP$ decays which independently constrain the $(\barρ,\barη)$ vertex of the unitarity triangle. The fitted amplitudes and phase are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the $B_s$ system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The possibility of having a new physics contribution to $K π$ decays is also discussed.3 pages, 2 figs. Talk given at EPS-HEP07 To appear in the proceedings, Reference addedHigh Energy Physics - Phenomenologytext