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26 April 2024

» arxiv » hep-ph/0312255

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Electromagnetic Form Factors of Hadrons in the Space- and Time-like Regions within a Constituent Quark Model on the Light Front
J. P. de Melo ; T. Frederico ; E. Pace ; G. Salme` ;
Date:	18 Dec 2003
Subject:	hep-ph
Affiliation:	Univer. Estadual-Sao Paulo), T. Frederico (ITA-Sao Paulo), E. Pace (Rome University), G. Salme` (INFN-Rome
Abstract:	An approach for describing the electromagnetic form factors of hadrons, in the space- and time-like regions, within a constituent quark model on the light front is shortly illustrated and calculations for the pion case are reported. Three main ingredients enter our approach: i) the dressed photon vertex where a photon decays in a quark-antiquark pair, ii) the on-shell quark-hadron vertex functions in the valence sector, and iii) the non-valence component of the hadron state.
Source:	arXiv, hep-ph/0312255
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