Indications for Factorization andReVub<0from RareBDecay Data

Surveying known hadronic rare B decays, we find that the factorization approximation can give a coherent account of $K\pi$, $\pi \pi$, and ${\rho }^0{\pi }^{+}$ data and give predictions for ${\omega }^0{\pi }^{+}$, $\rho \pi$, and $K^{*}\pi$ modes, if $\mathrm{Re}{V}_{\mathrm{ub}}$ is taken as negative (in standard phase convention) rather than positive. As further confirmation, we expect a lower $\sin 2\beta$ value at B factories as compared to current fits, and $B_s$ mixing close to LEP bounds at SLD and CDF.