Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-04-05
Phys.Rev. C66 (2002) 035201
Physics
Nuclear Physics
Nuclear Theory
version to appear in Phys. Rev. C. No change in the results and in the conclusions
Scientific paper
10.1103/PhysRevC.66.035201
The electromagnetic elastic form factors of pseudoscalar and vector mesons are analyzed for space-like momentum transfers in terms of relativistic quark models based on the Hamiltonian light-front formalism elaborated in different reference frames (q+ 0 and q+ <> 0). As far as the one-body approximation for the electromagnetic current operator is concerned, it is shown that the predictions of the light-front approach at q+=0 should be preferred, particularly in case of light hadrons, because of: i) the relevant role played by the Z-graph at q+ <> 0, and ii) the appropriate elimination of spurious effects, related to the orientation of the null hyperplane where the light-front wave function is defined.
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