Concurrent approaches to Generalized Parton Distribution modeling: the pion’s case
1 PIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
2 Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
3 Dpt. Física Aplicada, Fac. CCEE, Unversidad de Huelva, Huelva E-21071, Spain
a e-mail: firstname.lastname@example.org
Published online: 22 March 2017
The concept of Generalized Parton Distributions promises an understanding of the generation of the charge, spin, and energy-momentum structure of hadrons by quarks and gluons. Forthcoming measurements with unprecedented accuracy at Jefferson Lab and at CERN will challenge our quantitative description of the three-dimensional structure of hadrons. To fully exploit these future measurements, new tools and models are currently being developed.
We explain the difficulties of Generalized Parton Distribution modeling, and present some recent progresses. In particular we describe the symmetry-preserving Dyson-Schwinger and Bethe-Salpeter framework. We also discuss various equivalent parameterizations and sketch how to combine them to obtain models satisfying a priori all required theoretical constraints. At last we explain why these developments naturally fit in a versatile software framework, named PARTONS, dedicated to the theory and phenomenology of GPDs.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.