2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49287This is a quick review of CP non-conservation in $B$ physics. Several methods are described for testing the Kobayashi-Maskawa single phase origin of CP violation in B decays, pointing out some limitations due to hadronic uncertainties. A few characteristic signatures of new physics in B decay asymmetries are listed.12 pages, SLAC-PUB-8221, Invited talk given at the 1999 Conference on Kaon Physics, Chicago, IL, June 21-26, 1999High Energy Physics - Phenomenologytext