2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36842We study the charge correlations between charm mesons produced in 500 GeV pi- N interactions and the charged pions produced closest to them in phase space. With 110,000 fully reconstructed D mesons from experiment E791 at Fermilab, the correlations are studied as functions of the D-pi - D mass difference and of Feynman x. We observe significant correlations which appear to originate from a combination of sources including fragmentation dynamics, resonant decays, and charge of the beam.3 pages, 1 figure, LaTex, Fermilab E791 CollaborationHigh Energy Physics - Experimenttext