2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37775We present the preliminary result of a search for the decay of $B^0\to K^{*+}ρ^-$. The data were recorded with the $BaBar$ detector at the PEPII collider and correspond to 123 million $B\bar{B}$ pairs produced in the $e^+e^-$ annihilation through the $Υ(4S)$ resonance. We obtain an upper limit on the branching fraction for this decay of ${\cal B}(B^0\to K^{*+}ρ^-) <24 \times 10^{-6}$ (90% C.L.). All results are preliminary.15 pages, 7 postscript figues, submitted to ICHEP2004, Beijing,ChinaHigh Energy Physics - Experimenttext