Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach

Details Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach

2002-12-18

arxiv.org/abs/hep-ph/0212267v1

Braz.J.Phys. 33 (2003) 301-305

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear Brazilian Journal of Physics, BJP (2003), 5 pages, use revtex and epsfig, 3 figures

Scientific paper

The frame dependence of the pair-term contribution to the electromagnetic form factor of the pion is studied within the Light Front approach. A symmetric ansatz for the pion Bethe-Salpeter amplitude with a pseudo scalar coupling of the constituent to the pion field is used. In this model, the pair term vanishes for the Drell-Yan condition, while it is dominant for momentum transfer along the light-front direction.

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