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

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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. 
@article{TMF_1977_31_3_a6,
     author = {V. L. Kuz'min},
     title = {Elimination of divergences in the problem of scattering of a~beam of particles by a~medium},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {339--347},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1977_31_3_a6/}
}
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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/