2005/07/25 by J. R. Cudell, F. Bissey, J. Cugnon +3
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1063/1.1961043
published as AIP Conf.Proc. 775 (2005) 61 · 11 pages, presented at HADRONIC PHYSICS (HLPR 2004): Joint Meeting-Heidelberg-Liege-Paris-Rostock, Spa, Belgium, 16-18 December 2004, 11 pages, 11 figures, LaTeX
arxiv created 2005/07/25 · arxiv updated 2009/12/01
We give the results of a simple model for the diagonal and off-diagonal valence quark distributions of a pion. We show that structure can be implemented in a gauge-invariant manner. This explicit model questions the validityof the momentum sum rule, and gives an explicit counter-example to the Wandzura-Wilczek ansatz for twist-3 GPD's.