Coherent scattering of high-energy photon in a medium

Details Coherent scattering of high-energy photon in a medium Coherent scattering of high-energy photon in a medium

2000-05-22

arxiv.org/abs/hep-ph/0005215v1

Phys.Rev. D63 (2001) 116008

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 25 pages, 2 figures

Scientific paper

10.1103/PhysRevD.63.116008

The coherent scattering of photon in the Coulomb field (the Delbr\"uck scattering) is considered for the momentum transfer $\Delta \ll m$ in the frame of the quasiclassical operator method. In high-energy region this process occurs over rather long distance. The process amplitude is calculated taking into account the multiple scattering of particles of the intermediate electron-positron pair in a medium. The result is the suppression of the process. Limiting cases of weak and strong effects of the multiple scattering are analyzed. The approach used is the generalization of the method developed by authors for consideration of the Landau-Pomeranchuk-Migdal effect.

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