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

J. P. B. C. de Melo·T. Frederico·E. Pace·G. Salme
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Abstract

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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J. P. B. C. de Melo, T. Frederico, E. Pace, G. Salme. 2002-12-18. Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach. https://arxiv.org/abs/hep-ph/0212267

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