I discuss the results for ∣Vub∣f+(0) and ∣Vub∣ obtained from the spectrum of B→πeν and the form factor f+(q2) from QCD sum rules on the light-cone and unquenched lattice calculations; the shape of f+(q2) is fixed from experimental data.
@article{arxiv.0705.2290,
title = {|V_{ub}| from the Spectrum of B->pi e nu},
author = {Patricia Ball},
journal= {arXiv preprint arXiv:0705.2290},
year = {2008}
}