2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39555The role of the decay mode B->rho pi for the determination of the unitarity angle alpha is critically examined in view of the smaller than expected ratio B(B->rho+/- pi-/+)/B(B->rho0 pi+/-) found by the CLEO collaboration.5 pages, 1 figure, Contribution to the Proceedings of the XXXVth Rencontres de Moriond, Electroweak Interactions and Unified Theories Les Arcs 1800, France, March 11-18 2000High Energy Physics - Phenomenologytext