2006/03/21 by Giovanni Ossola, Ossola, Giovanni
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.hep-ph/0603157
openalex publication_date 2006/03/21 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
We present OPE predictions for the hadronic mass and q2 moments in inclusive semileptonic charmless B decays, with a lower cut on the charged lepton energy and an upper cut on the hadronic invariant mass. We include non-perturbative corrections through O(1/mb3) and perturbative contributions through O(alphas2 beta0). We also investigate the range of the cut on the hadronic mass for which the local OPE can be considered valid and give estimates of the residual theoretical uncertainty. The study of these moments is important to constrain the effect of the Weak Annihilation (WA) contributions and the shape of the distribution function, providing a more precise inclusive determination of Vub.