RT Journal Article
T1 Covariant extension of the GPD overlap representation at low Fock states
A1 Chouika, N.
A1 Mezrag, Cédric
A1 Moutarde, Hervé
A1 Rodríguez Quintero, José
AB We present a novel approach to compute generalized parton distributions within the lightfront wave function overlap framework. We show how to systematically extend generalized parton distributions computed within the DGLAP region to the ERBL one, fulfilling at the same time both the polynomiality and positivity conditions. We exemplify our method using pion lightfront wave functions inspired by recent results of non-perturbative continuum techniques and algebraic nucleon lightfront wave functions. We also test the robustness of our algorithm on reggeized phenomenological parameterizations. This approach paves the way to a better understanding of the nucleon structure from non-perturbative techniques and to a unification of generalized parton distributions and transverse momentum dependent parton distribution functions phenomenology through lightfront wave functions.
PB Springer Verlag
SN 1434-6044
YR 2017
FD 2017-12
LK http://hdl.handle.net/10272/16161
UL http://hdl.handle.net/10272/16161
LA eng
NO Chouika, N., Mezrag, C., Moutarde, H., & Rodríguez-Quintero, J. (2017). Covariant extension of the GPD overlap representation at low Fock states. The European Physical Journal C, 77(12). https://doi.org/10.1140/epjc/s10052-017-5465-6
NO The authors would like to thank J. Bremont, J. Carbonell, R. Clackdoyle, M. Defrise, L. Desbat, P. Lafitte, D. Muller, S. Rit, C.D. Roberts, C. Shi and O. Teryaev for valuable discussions and comments. The authors are also thankful for the chance to participate in the workshops "Non-Perturbative QCD 2014", Punta Umbria, Spain, where the overlap representation project started being discussed and "Non-Perturbative QCD 2016", Sevilla, Spain, where first phenomenologically relevant applications have been presented. This work is partly supported by U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract no. DE-AC02-06CH11357, by the Commissariat a? l'Energie Atomique et aux Energies Alternatives, the GDR QCD "Chromodynamique Quantique", the ANR-12-MONU-0008-01 "PARTONS" and the Spanish ministry Research Project FPA2014-53631-C2-2-P.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026