Date of this Version
Using 3.1 fb-1 of data accumulated at the Υ(4S) by the CLEO-II detector, corresponding to 3.3×106 BB̅ pairs, we have searched for the color-suppressed B hadronic decay processes B0→D0 (D*0)X0, where X0 is a light neutral meson π0, ρ0, η, η′ or ω. The D*0 mesons are reconstructed in D*0→D0π0 and the D0 mesons in D0→K-π+, K-π+π0 and K-π+π+π- decay modes. No obvious signal is observed. We set 90% C.L. upper limits on these modes, varying from 1.2×10-4 for B0→D0π0 to 1.9×10-3 for B0→D*0η′.