Current in the light-front Bethe-Salpeter formalism II: Applications

Details Current in the light-front Bethe-Salpeter formalism II: Applications Current in the light-front Bethe-Salpeter formalism II: Applications

2002-10-23

arxiv.org/abs/hep-ph/0210305v1

Phys.Rev. D67 (2003) 054015

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 6 figures, RevTex4

Scientific paper

10.1103/PhysRevD.67.054015

We pursue applications of the light-front reduction of current matrix elements in the Bethe-Salpeter formalism. The normalization of the reduced wave function is derived from the covariant framework and related to non-valence probabilities using familiar Fock space projection operators. Using a simple model, we obtain expressions for generalized parton distributions that are continuous. The non-vanishing of these distributions at the crossover between kinematic regimes (where the plus component of the struck quark's momentum is equal to the plus component of the momentum transfer) is tied to higher Fock components. Moreover continuity holds due to relations between Fock components at vanishing plus momentum. Lastly we apply the light-front reduction to time-like form factors and derive expressions for the generalized distribution amplitudes in this model.

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