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Valence and nonvalence vertex functions for timelike and spacelike nucleon form factors within light-front dynamics |
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| Authors: | E Pace G Salmè T Frederico S Pisano |
| Institution: | Dipartimento di Fisica, Università di Roma “Tor Vergata” and Istituto Nazionale di Fisica Nucleare, Sezione Tor Vergata, Roma, Italy Istituto Nazionale di Fisica Nucleare, Sezione Roma I, Roma, Italy Departamento de Física, Centro Técnico Aeroespacial, S?o José dos Campos, S?o Paulo, Brazil Institut de Physique Nucléaire, 91406, Orsay, France |
| Abstract: | A unified model for spacelike and timelike hadron form factors within light-front dynamics successfully applied to the pion is extended to the nucleon to study the role of valence and nonvalence vertex functions. Preliminary results for ?10(GeV/c)2 ≤ q 2 ≤ 10(GeV/c)2 are presented. |
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