Measurement of B → X^y Decays and Determination of │V_(td)/V_(ts)│

Using a sample of 383 X 10^6 BB events collected by the BABAR experiment, we measure sums of seven exclusive final states B → X_(d(s))Y, where X_d (Xs) is a nonstrange (strange) charmless hadronic system in the mass range 0:6–1:8 GeV/c^2. After correcting for unmeasured decay modes in this mass range, we obtain a branching fraction for b → dy of (7:2 ± 2:7(stat) ± 2:3(syst) X 10^(-6). Taking the ratio of X_d to X_s we find Г(b → dy)/Г(b → sy) = 0:033 ± 0:013(stat) ± 0:009(syst), from which we determine │V_(td)/V_(ts)│= 0:177 ± 0:043.