Valence and nonvalence vertex functions for timelike and spacelike nucleon form factors within light-front dynamics

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 \udbff\udc0110 ðGeV=cÞ2 \udbff\udc0d q2 \udbff\udc0d 10 ðGeV=cÞ2 are presented