@article{10272/18766,
year = {2015},
month = {1},
url = {http://hdl.handle.net/10272/18766},
abstract = {We sketch here an approach to the computation of genaralised parton distributions (GPDs), based upon a rainbow-ladder (RL) truncation of QCD's Dyson-Schwinger equations and exemplified via the pion's valence dressed-quark GPD, H v π(x,ξ,t). Our analysis focuses on the case of zero skewness, ξ = 0, and underlines that the impulse-approximation used hitherto to define the pion's valence dressed-quark GPD is generally invalid owing to omission of contributions from the gluons which bind dressed-quarks into the pion. A simple correction enables us to identify a practicable improvement to the approximation for H v π(x,0,t), expressed as the Radon transform of a single amplitude. Therewith we obtain results for H v π(x,0,t) and the associated impact-parameter dependent distribution, , which provide a qualitatively sound picture of the pion's dressed-quark structure at an hadronic scale.},
publisher = {IOP Publishing},
keywords = {DSE},
keywords = {GPD},
keywords = {Pion's valence},
keywords = {Dressed-quark},
title = {DSE inspired model for the pion’s valence dressed-quark GPD},
doi = {10.1088/1742-6596/631/1/012062},
author = {Chang, L. and Mezrag, Cédric and Moutarde, Hervé and Rodríguez Quintero, José},
}