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- W2051476103 abstract "Helicity amplitudes and the differential cross section of high-energy ${e}^{+}{e}^{ensuremath{-}}$ photoproduction accompanied by bremsstrahlung in the electric field of a heavy atom (i.e., the amplitudes of the process ${ensuremath{gamma}}_{1}Zensuremath{rightarrow}{e}^{+}{e}^{ensuremath{-}}{ensuremath{gamma}}_{2}Z)$ are derived. The results are exact in the nuclear charge number and are obtained in the leading quasiclassical approximation. They correspond to the leading high-energy small-angle asymptotics of the amplitude. It is shown that, in general, accounting for the Coulomb corrections essentially modify the differential cross section, which is different from the Born result. When the initial photon is circularly polarized, the Coulomb corrections lead to the asymmetry in the distribution over the azimuth angles ${ensuremath{varphi}}_{i}$ of produced particles with respect to the replacement ${ensuremath{varphi}}_{i}ensuremath{rightarrow}ensuremath{-}{ensuremath{varphi}}_{i}$." @default.
- W2051476103 created "2016-06-24" @default.
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- W2051476103 date "2014-12-05" @default.
- W2051476103 modified "2023-10-18" @default.
- W2051476103 title "High-energye+e−photoproduction in the field of a heavy atom accompanied by bremsstrahlung" @default.
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- W2051476103 doi "https://doi.org/10.1103/physreva.90.062112" @default.
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