1999/11/30 by Stefan Weinzierl, S. Weinzierl, O. I. Yakovlev +1
Chemistry · Mathematics · Physics and Astronomy · #Algorithm #Cabibbo–Kobayashi–Maskawa matrix #Chemistry #Computer science #Cone (formal languages) #Element (criminal law) #Geometry #Hadron #High-Energy Particle Collisions Research #Light cone #Mathematics #Matrix (chemical analysis) #Matrix element #Operator (biology) #Operator product expansion #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Product (mathematics) #QCD sum rules #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Sum rule in quantum mechanics #Twist #hep-ph
paper · pdf · doi:10.1088/0954-3899/26/5/338
published as J.Phys.G26:737,2000 · 5 pages, talk given by S. Weinzierl at the UK Phenomenology Workshop on Collider Physics, Durham, 19-24 September
arxiv created 1999/12/02 · openalex publication_date 2000/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The semileptonic decay B -> pi l nu is one of the most important reactions for the determination of the CKM matrix element |Vub|. However, in order to extract |Vub| from data one needs an accurate theoretical calculation of the hadronic matrix element describing the B to pi transition. QCD sum rules, based on operator-product expansion on the light-cone, provide a reliable approach to this aim. QCD corrections and higher twist contributions can be taken systematically into account.