Inclusive semileptonic B decays and the determination of |Vub|

We study the triple differential distribution of B -> X(u)lv, consistently including all perturbative and non-perturbative effects through O(alpha(2)(s)beta(0)) and O(1/m(b)(3)). The Fermi motion is parameterized in terms of a single light-cone function for each structure function and for any value of q(2), accounting for all subleading effects. We discuss the problem sand uncertainties related to the high-q(2) tail and to Weak Annihilation effects. We work in the kinetic scheme, a framework characterized by a Wilsonian treatment with a hard cutoff mu similar to 1GeV. Our method illustrated with the extraction of |V-ub| from some of the latest experimental data, providing a detailed estimate of the theoretical uncertainty.