Geodesic
Elimination of divergences in the problem of scattering of a beam of particles by a medium
Teoretičeskaâ i matematičeskaâ fizika, Tome 31 (1977) no. 3, pp. 339-347 
V. L. Kuz'min. Elimination of divergences in the problem of scattering of a beam of particles by a medium. Teoretičeskaâ i matematičeskaâ fizika, Tome 31 (1977) no. 3, pp. 339-347. http://geodesic.mathdoc.fr/item/TMF_1977_31_3_a6/
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     title = {Elimination of divergences in the problem of scattering of a~beam of particles by a~medium},
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Voir la notice de l'article provenant de la source Math-Net.Ru

Scattering of the beam of particles (neutrons) by a medium is considered. After the averaging according to the statistical mechanics rules, the cross-section of the process is represented in the form of the series including many-particle distribution functions. The series describes the scattering processes of arbitrary multiplicity. Disconnected parts of the distribution functions give rise to divergences. A method of the re-summation of the original series is proposed, which removes all the divergences completely.

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