Influence of a medium on pair photoproduction and bremsstrahlung
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0002097,
title = {Influence of a medium on pair photoproduction and bremsstrahlung},
author = {V. N. Baier and V. M. Katkov},
journal= {arXiv preprint arXiv:hep-ph/0002097},
year = {2009}
}
Comments
22 pages, 3 figures, Latex