2001/04/30 by Matthias Neubert · 25 citations
Chemistry · Physics and Astronomy · #Black Holes and Theoretical Physics #Chemistry #Chromatography #Extraction (chemistry) #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Radiative transfer #hep-ph
paper · pdf · doi:10.1016/s0370-2693(01)00668-2
published in Physics Letters B 513(1-2), 88-92 (Elsevier BV) · 6 pages, 2 figures; revised version containing a response to hep-ph/0105066, main conclusions unchanged
arxiv created 2001/06/08 · openalex publication_date 2001/07/01 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The element |Vub| of the quark mixing matrix can be extracted with small theoretical uncertainties by combining weighted integrals over the endpoint regions of the lepton spectrum in B -> Xu l nu decays and the photon spectrum in B -> Xs gamma decays. The perturbative corrections to this determination are computed at next-to-leading order including operator mixing, which has an important impact. The effect of Sudakov resummation is shown to be numerically insignificant.