2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190430While the Kobayashi--Maskawa single phase origin of CP violation passed its first crucial precision test in $B\to J/ψK_S$, the chirality of weak $b$-quark couplings has not yet been carefully tested. We discuss recent proposals for studying the chiral and CP-violating structure of these couplings in radiative and in hadronic B decays.15 pages, talk at PASCOS'03, Tata Inst., Mumbai, Jan. 2003High Energy Physics - Phenomenologytext