出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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=m3b
) and perturbative
contributions through O(a2
s b0). 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 jVubj.
