1994/02/28 by V. M. Braun, Vladimir Braun, Igor Halperin +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/0370-2693(94)91505-9
published as Phys.Lett. B328 (1994) 457-465 · LATEX, 11 pages, 3 figures appended as uu-encoded file, MPI-PhT/94-8
arxiv created 1994/03/18 · openalex publication_date 1994/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We propose a simple method to calculate the pion form factor at not very large momentum transfers, which combines the technique of the QCD sum rules with the description of the pion in terms of the set of wave functions of increasing twist. This approach allows one to calculate the soft (end point) contribution to the form factor in a largely model-independent way. Our results confirm existing expectations that the soft contribution remains important at least up to the momentum transfers of order 10 GeV2, and suggest that it comes from the region of relatively small transverse separations of order 1 GeV-1.