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dc.contributor.authorChang, L.
dc.contributor.authorMezrag, Cédric
dc.contributor.authorMoutarde, Hervé
dc.contributor.authorRodríguez Quintero, José
dc.identifier.citationChang, 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:
dc.description.abstractWe 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.es_ES
dc.publisherIOP Publishinges_ES
dc.relation.isversionofPublisher’s versión
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherPion's valencees_ES
dc.titleDSE inspired model for the pion’s valence dressed-quark GPDes_ES

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