2019/09/20 by Aurore Courtoy, Santiago Noguera, Sergio Scopetta · 1 citation
Physics and Astronomy · #Distribution (mathematics) #Distribution function #Drell–Yan process #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Parton #Pion #Quantum Chromodynamics and Particle Interactions #Quark #Regularization (linguistics) #hep-ph
paper · pdf · doi:10.1007/jhep12(2019)045
22 pages, 6 figures
arxiv created 2019/09/20 · openalex created_date 2019/09/26 · openalex publication_date 2019/12/01 · arxiv updated 2020/01/29 · openalex updated_date 2026/08/05
A bstract Two-parton correlations in the pion, a non perturbative information encoded in double parton distribution functions, are investigated in the Nambu–Jona-Lasinio model. It is found that double parton distribution functions expose novel dynamical information on the structure of the pion, not accessible through one-body parton distributions, as it happens in several estimates for the proton target and in a previous evaluation for the pion, in a light-cone framework. Expressions and predictions are given for double parton distributions corresponding to leading-twist Dirac operators in the quark vertices, and to different regularization methods for the Nambu–Jona-Lasinio model. These results are particularly relevant in view of forthcoming lattice data.