Influence of a medium on pair photoproduction and bremsstrahlung

Details Influence of a medium on pair photoproduction and bremsstrahlung Influence of a medium on pair photoproduction and bremsstrahlung

2000-02-09

arxiv.org/abs/hep-ph/0002097v1

Phys.Rev. D62 (2000) 036008

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 3 figures, Latex

Scientific paper

10.1103/PhysRevD.62.036008

The creation of electron-positron pair by a photon and the bremsstrahlung of an electron in a medium are considered in high-energy region, where influence of the multiple scattering on the processes (the Landau-Pomeranchuk-Migdal (LPM) effect) becomes essential. The pair photoproduction probability is calculated with an accuracy up to the "next to leading logarithm". The integral characteristics: the radiation length and the total probability of pair photoproduction are analyzed under influence of the LPM effect, and the asymptotic expansions of these characteristics are derived.

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