QED radiative corrections to impact factors
Journal Article
·
· Journal of Experimental and Theoretical Physics
- Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Researches, Dubna, Moscow oblast, 141980 (Russian Federation)
- St. Petersburg Nuclear Physics Institute, Gatchina, Leningrad oblast, 188350 (Russian Federation)
- Belarus State University, Minsk, 220040 (Belarus)
We consider radiative corrections to the electron and photon impact factors. The generalized eikonal representation for the e{sup +}e{sup -} scattering amplitude at high energies and fixed momentum transfers is violated by nonplanar diagrams. An additional contribution to the two-loop approximation appears from the Bethe-Heitler mechanism of fermion pair production with the identity of the fermions in the final state taken into account. The violation of the generalized eikonal representation is also related to the charge parity conservation in QED. A one-loop correction to the photon impact factor for small virtualities of the exchanged photon is obtained using the known results for the cross section of the e{sup +}e{sup -} production during photon-nuclei interactions.
- OSTI ID:
- 20591973
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 2 Vol. 92; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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