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dc.contributor.authorChouika, N.
dc.contributor.authorMezrag, Cédric
dc.contributor.authorMoutarde, Hervé
dc.contributor.authorRodríguez Quintero, José
dc.identifier.citationChouika, N., Mezrag, C., Moutarde, H., & Rodríguez-Quintero, J. (2018). A Nakanishi-based model illustrating the covariant extension of the pion GPD overlap representation and its ambiguities. Physics Letters B, 780, 287-293.
dc.description.abstractA systematic approach for the model building of Generalized Parton Distributions (GPDs), based on their overlap representation within the DGLAP kinematic region and a further covariant extension to the ERBL one, is applied to the valence-quark pion’s case, using light-front wave functions inspired by the Nakanishi representation of the pion Bethe–Salpeter amplitudes (BSA). This simple but fruitful pion GPD model illustrates the general model building technique and, in addition, allows for the ambiguities related to the covariant extension, grounded on the Double Distribution (DD) representation, to be constrained by requiring a soft-pion theorem to be properly observed.es_ES
dc.description.sponsorshipThe authors would like to thank J-F. Mathiot, C.D. Roberts, G. Salme and C. Shi for valuable discussions and comments. This work is partly supported 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.
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherGeneralized parton distributionses_ES
dc.subject.otherLight-front wave-functionses_ES
dc.subject.otherRadon transformes_ES
dc.subject.otherDouble distributionses_ES
dc.titleA Nakanishi-based model illustrating the covariant extension of the pion GPD overlap representation and its ambiguitieses_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/Spanish ministry Research Project [FPA2014-53631-C2-2-P and ANR-12-MONU-0008-01]

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