Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-09
Phys.Rev.A69:022708,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 7 figures, RevTeX.Typos are corrected. The numerical results, figures and conclusions remain unchanged as they were
Scientific paper
10.1103/PhysRevA.69.022708
First correction to the high-energy asymptotics of the total $e^+e^-$ photoproduction cross section in the electric field of a heavy atom is derived with the exact account of this field. The consideration is based on the use of the quasiclassical electron Green function in an external electric field. The next-to-leading correction to the cross section is discussed. The influence of screening on the Coulomb corrections is examined in the leading approximation. It turns out that the high-energy asymptotics of the corresponding correction is independent of the photon energy. In the region where both produced particles are relativistic, the corrections to the high-energy asymptotics of the electron (positron) spectrum are derived. Our results for the total cross section are in good agreement with experimental data for photon energies down to a few $MeV$. In addition, the corrections to the bremsstrahlung spectrum are obtained from the corresponding results for pair production.
Lee Roman N.
Milstein Alexander I.
Strakhovenko V. M.
No associations
LandOfFree
High-energy expansion of Coulomb corrections to the e+e- photoproduction cross section does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-energy expansion of Coulomb corrections to the e+e- photoproduction cross section, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-energy expansion of Coulomb corrections to the e+e- photoproduction cross section will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-447179