Search for B-meson decays to two-body final states with a0(980) mesons

We present a search for B decays to charmless final states involving charged or neutral a0 mesons. The data sample corresponds to 89x106 BB pairs collected with the BABAR detector operating at the PEP-II asymmetric-energy B Factory at Stanford Linear Accelerator Center. We find no significant signals and determine the following 90% C.L. upper limits: B(B0→a0-π+)<5.1x10-6, B(B0→a0-K+)<2.1x10-6, B(B-→a0-K0)<3.9x10-6, B(B+→a00π+)<5.8x10-6, B(B+→a00K+)<2.5x10-6, and B(B0→a00K0)<7.8x10-6, where in all cases B indicates the product of branching fractions for B→a0X and a0→ηπ, where X indicates K or π