2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192333We study the effect of isospin projections on a two source picture of coherent pions coming from nucleon-antinucleon annihilation. We show that important Hanbury-Brown Twiss correlations among like charge pion pairs compared with unlike arise from these isospin projections.9 pages, PSI-PR-94-34, submitted to Phys.Rev.CNuclear Theorytext