Charge asymmetry in the differential cross section of high-energy bremsstrahlung in the field of a heavy atom

Abstract

The distinction between the charged particle and antiparticle differential cross sections of high-energy bremsstrahlung in the electric field of a heavy atom is investigated. The consideration is based on the quasiclassical approximation to the wave functions in the external field. The charge asymmetry (the ratio of the antisymmetric and symmetric parts of the differential cross section) arises due to the account for the first quasiclassical correction to the differential cross section. All evaluations are performed with the exact account of the atomic field. We consider in detail the charge asymmetry for electrons and muons. For electrons, the nuclear size effect is not important while for muons this effect should be taken into account. For the longitudinal polarization of the initial charged particle, the account for the first quasiclassical correction to the differential cross section leads to the asymmetry in the cross section with respect to the replacement $\phi \to -\phi$, where $\phi$ is the azimuth angle between the photon momentum and the momentum of the final charged particle.

arXiv comment23 pages, 6 figures

References in corpus (9)

• High-energy expansion of Coulomb corrections to the e+e- photoproduction cross section
• Quasiclassical approach to high-energy QED processes in strong laser and atomic fields
• Coulomb corrections to bremsstrahlung in electric field of heavy atom at high energies
• Quasiclassical Green function and Delbruck scattering in a screened Coulomb field
• Quasiclassical Green function in an external field and small-angle scattering
• Charge asymmetry in the differential cross section of high-energy e+e- photoproduction in the field of a heavy atom
• High-energy $e^{+}{e}^{-}$ photoproduction cross section close to the end of spectrum
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• Angular distribution of high-energy $e^{+}{e}^{-}$ photoproduction close to the end of spectrum

Cited by in corpus (6)

• High-energy bremsstrahlung on atoms in a laser field
• Coulomb effects in high-energy $e^{+}{e}^{-}$ electroproduction by a heavy charged particles in an atomic field
• High-energy electroproduction in an atomic field
• Small-angle scattering and quasiclassical approximation beyond leading order
• Double bremsstrahlung from high-energy electron in the atomic field
• Charge asymmetry in the spectra of bremsstrahlung and pair production