2006/11/30 by Saeed Ahmad, H. Honkanen, Heli Honkanen +2
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.75.094003
published as Phys.Rev.D75:094003,2007 · 42 pages, 21 figures
openalex publication_date 2007/05/02 · arxiv created 2007/08/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose a physically motivated parametrization for the unpolarized generalized parton distributions. At zero value of the skewness variable, \ensuremathζ, the parametrization is constrained by simultaneously fitting the experimental data on both the nucleon elastic form factors and the deep inelastic structure functions. A rich phenomenology can be addressed based on this parametrization. In particular, we track the behavior of the average: (i) interparton distances as a function of the momentum fraction, X, (ii) X as a function of the four-momentum transfer, t; and (iii) the intrinsic transverse momentum k_\ensuremath⊥ as a function of X. We discuss the extension of our parametrization to \ensuremathζ\ensuremath≠0 where additional constraints are provided by higher moments of the generalized parton distributions obtained from ab initio lattice QCD calculations.