Charmless hadronic B decays at BABAR

We present preliminary results of several searches for rare charmless hadronic decays of the B meson using data collected by the BABAR detector at the Stanford Linear Accelerator Center's PEP-II storage ring. We search for the decays h⁺h^-, h⁺h^-h⁺, h⁺h^-π⁰, X⁰h⁺, and X⁰K_s⁰, where h = π or K, and X⁰ = η′ or ω. In a sample of 8.8 million BB̄ decays we measure the branching fractions: B(B⁰ → π⁺π^-) = (9.3_-2.3-1.4^+2.6+1.2) × 10^-6 B(B⁰ → K⁺π^-) = (12.5_-2.6-1.7^+3.0+1.3) × 10^-6, B(B⁰ → ρ^-π⁺) = (49 ± 13_-5⁺⁶) × 10^-6, and B(B⁺ → η′K⁺) = (62±18±8) × 10^-6. We calculate upper limits for the modes without a significant signal.