2009/03/31 by I. V. Anikin, Dmitry Yu. Ivanov, D. Yu. Ivanov +3 · 3 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/j.physletb.2009.11.040
published as Phys.Lett.B682:413-418,2010 · 6 pages, 2 figures, modified and slightly expanded version to be published in Phys.Lett. B
arxiv created 2009/11/17 · openalex publication_date 2009/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02
We describe hard exclusive processes beyond the leading twist approximation in a framework based on the Taylor expansion of the amplitude around the dominant light-cone directions. This naturally introduces an appropriate set of non-perturbative correlators whose number is minimalized after taking into account QCD equations of motion and the invariance under rotation on the light-cone. We exemplify this method at the twist 3 level and show that the coordinate and momentum space descriptions are fully equivalent.