2004/12/06 by Patricia Ball, Roman Zwicky · 4 citations
Mathematics · Physics and Astronomy · #Algorithm #Computer science #Geometry #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Twist #hep-ph
paper · pdf · doi:10.1103/physrevd.71.014029
published as Phys.Rev.D71:014029,2005 · 44 pages
arxiv created 2004/12/06 · openalex publication_date 2005/01/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present an improved calculation of B\ensuremath→ light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is typically 10% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters. We present our results in a way which details the dependence of the form factors on these parameters and facilitates the incorporation of future updates of their values from, e.g., lattice calculations. We also give simple and easy-to-implement parametrizations of the q2 dependence of the form factors which are valid in the full kinematical regime of q2.