Lattice-Constrained Dispersive Bounds for $\bar B^0 \to π^+ l^- \barν$ Decays

Abstract

I present a recent piece of work on semileptonic $B \to π$ decays in which lattice results and kinematical and dispersive constraints are combined to obtain model-independent bounds on the relevant form factors and rates.

LaTeX, 5 pages, 1 PostScript figure. Calls stwol.sty and epsf.sty. Talk given at the 28$^{th}$ International Conference on High Energy Physics (ICHEP96), Warsaw, Poland, 25-31 July 1996. To appear in the proceedings