RT Journal Article
T1 DSE inspired model for the pion’s valence dressed-quark GPD
A1 Chang, L.
A1 Mezrag, Cédric
A1 Moutarde, Hervé
A1 Rodríguez Quintero, José
AB 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.
PB IOP Publishing
SN 1742-6588
YR 2015
FD 2015-01
LK http://hdl.handle.net/10272/18766
UL http://hdl.handle.net/10272/18766
LA eng
NO Chang, L., Mezrag, C., Moutarde, H. ...  Rodríguez Quintero, J. (2015). DSE inspired model for the pion’s valence dressed-quark GPD. Journal of Physics: Conference Series, 631, 012062. DOI: https://doi.org/10.1088/1742-6596/631/1/012062
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026