Search for the rare decays B→πl^{+}l^{-} and B^{0}→ηl^{+}l^{-}

We present the results of a search for the rare flavor-changing neutral-current decays B→πl+l- (π=π±, π0 and l=e, μ) and B0→ηl+l- using a sample of e+e-→Υ(4S)→BB ̄ decays corresponding to 428fb-1 of integrated luminosity collected by the BABAR detector. No significant signal is observed, and we set an upper limit on the isospin and lepton-flavor averaged branching fraction of B(B→πl+l-)<5.9×10-8 and a lepton-flavor averaged upper limit of B(B0→ηl+l-)<6.4×10-8, both at the 90% confidence level. We also report 90% confidence level branching fraction upper limits for the individual modes B+→π+e+e-, B0→π0e+e-, B+→π+μ+μ-, B0→π0μ+μ-, B0→ηe+e-, and B0→ημ+μ-.