Geodesic
Integral representation for electromagnetic form factors of two-particle systems
Teoretičeskaâ i matematičeskaâ fizika, Tome 20 (1974) no. 2, pp. 194-201 
A. I. Kirillov. Integral representation for electromagnetic form factors of two-particle systems. Teoretičeskaâ i matematičeskaâ fizika, Tome 20 (1974) no. 2, pp. 194-201. http://geodesic.mathdoc.fr/item/TMF_1974_20_2_a5/
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is assumed that the form factor of the connected part of the matrix element of the current of a two-particle system can be represented by the boundary values of functions that are holomorphic in a certain small neighborhood of the physical region. This assumption is used to derive an integral representation for the form factor of the two-particle system, expressing it in terms of the form factors of the particles constituting the system and the physical $S$-matrix. No assumptions are made concerning the dynamics of the two-particle system.

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