2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211240The final state of the decay D0 --> pi+ pi- pi0 is analyzed in terms of isospin eigenstates. It is shown that the final state is dominated by the isospin-0 component. This suggests that isospin considerations may provide insight into this and perhaps other $\Dz$-meson decay. We also discuss the isospin nature of the nonresonant contribution in the decay, which can be further understood by studying the decay D0 --> pi0 pi0 pi0.10 pages, 2 postscript figures, submitted to Phys Rev DHigh Energy Physics - Phenomenologytext