https://doi.org/10.1140/epjd/s10053-024-00827-5
Regular Article - Atomic Physics
Polarization of recoil photon in nonlinear Compton process
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
Received:
10
November
2023
Accepted:
11
March
2024
Published online:
25
March
2024
The polarization of recoil photon (
) in the nonlinear Compton process 
in the interaction of a relativistic electron with a linearly polarized laser beam (
) is studied within the Furry picture in the lowest order, tree-level S matrix element. In particular, we consider the asymmetry of differential cross sections 
for two independent axes describing the Compton process equal to the intrinsic spin variable 
that determines the polarization properties of . The sign and absolute value of the asymmetry determine the direction and degree of polarization. We have analyzed the process in a wide range of laser intensity that covers existing and future experiments. Our results provide additional knowledge for studying nonlinear multi-photon effects in quantum electrodynamics and can be used in planning experiments at envisaged laser facilities.
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