QCD-Factorization of inclusive B decays and |Vub|
High Energy Physics - Phenomenology
2010-11-23 v1
Abstract
Recent progress in the theoretical description of inclusive B to X_u l nu decays in the shape-function region is reported. Finite moments of the shape function are related to HQET parameters. Event fractions for several experimental cuts are presented, with a particular emphasis on the hadronic variable P+. The aim of this talk is to introduce the P+ spectrum, to compare it to the hadronic invariant mass spectrum and the charged-lepton energy spectrum, and to study the prospect of evaluating |Vub| in the presence of a large background from B to X_c decays.
Cite
@article{arxiv.hep-ph/0408339,
title = {QCD-Factorization of inclusive B decays and |Vub|},
author = {Bjorn O. Lange},
journal= {arXiv preprint arXiv:hep-ph/0408339},
year = {2010}
}
Comments
8 pages, 7 figures, uses espcrc2.sty (included). Talk presented at the Sixth International Conference on Hyperons, Charm and Beauty Hadrons, IIT, Chicago, June 27--July 3 2004