Comparative analysis of non-perturbative effects in B -> X_u l anti-nu_l decays

Simple item page
dc.creatorKniehl, B. A.
dc.creatorKramer, G.
dc.creatorYang, J. -F.
dc.date2007-03-22
dc.date.accessioned2026-07-07T11:59:13Z
dc.date.available2026-07-07T11:59:13Z
dc.descriptionIn order to extract the Cabibbo-Kobayashi-Maskawa matrix element |V_{ub}| from B -> X_u l anti-nu_l decays, the overwhelming background from B -> X_c l anti-nu_l decays must be reduced by appropriate acceptance cuts. We study the non-perturbative effects due to the motion of the b quark inside the B meson on the phenomenologically relevant decay distributions of B -> X_u l anti-nu_l in the presence of such cuts in a comparative analysis based on shape functions and the parton model in the light-cone limit. Comparisons with recent data from the CLEO, BABAR, and BELLE collaborations favor the shape-function approach.
dc.description27 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0703239
dc.identifierhttp://arxiv.org/abs/hep-ph/0703239
dc.identifierPhys.Rev.D75:074023,2007
dc.identifierdoi:10.1103/PhysRevD.75.074023
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206488
dc.subjectHigh Energy Physics - Phenomenology
dc.titleComparative analysis of non-perturbative effects in B -> X_u l anti-nu_l decays
dc.typetext

Files

Collections

arXiv