2006/08/10 by Patricia Ball · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2006.08.038
published as Phys.Lett.B641:50-56,2006 · 12 pages
arxiv created 2006/08/10 · openalex publication_date 2006/08/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02
We compare the predictions for the form factors f+D→π,K(0) from QCD sum rules on the light-cone with recent experimental results. We find f+D→π(0)=0.63±0.11, f+D→K(0)=0.75±0.12 and f+D→π(0)/f+D→K(0)=0.84±0.04 in very good agreement with experiment. Although the uncertainties of the form factors themselves are larger than the current experimental errors and difficult to reduce, their ratio is determined much more accurately and with an accuracy that matches that of experiment.