Heavy quark symmetry in isosinglet non-leptonic B-decays

We use a factorization theorem from the soft-collinear effective theory along with heavy quark symmetry to make model independent predictions for B¯0→D(*)0M where M={η,η′,ϕ,ω}. Gluon production of these isosinglet mesons is included. We predict the equality of branching fractions in the B¯→DM and B¯→D*M channels, with corrections at order ΛQCD/Q and αs(Q) where Q=mb,mc, or EM. We also predict that Br(B¯0→Dη′)/Br(B¯0→Dη)=tan2(θ)=0.67 and Br(B¯→Dϕ)/Br(B¯→Dω)≲0.2, where here there are also αs(EΛ) corrections. These results agree well with the available data. A test for SU(3) violation in these decays is constructed.