Light front cloudy bag model: Nucleon electromagnetic form factors

The nucleon is modeled, using light front dynamics, as a relativistic system of three bound constituent quarks surrounded by a cloud of pions. The pionic cloud is important for understanding low-momentum transfer physics, especially the neutron charge radius, but the quarks are dominant at high values of ${Q}^{2}.$ The model achieves a very good description of existing data for the four electromagnetic elastic form factors.

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