Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach
de Melo, J. P. B. C. · Frederico, T. · Pace, E. · Salme, G.
الأصل · EN
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.
الترجمة العربية
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