1. Photon polarization effects in polarized electron-positron pair production in a strong laser field
- Author
-
Ya-Nan Dai, Yue-Yue Chen, Karen Zaven Hatsagortsyan, Bai-Fei Shen, Jian-Xing Li, Rashid Shaisultanov, and Christoph H. Keitel
- Subjects
Nuclear and High Energy Physics ,Photon ,FOS: Physical sciences ,Electron ,QC770-798 ,Elliptical polarization ,Research group K. Z. Hatsagortsyan – Division C. H. Keitel ,law.invention ,High Energy Physics - Phenomenology (hep-ph) ,Positron ,law ,Nuclear and particle physics. Atomic energy. Radioactivity ,Photon polarization ,Physics::Atomic Physics ,Electrical and Electronic Engineering ,Physics ,Laser ,Polarization (waves) ,Atomic and Molecular Physics, and Optics ,Physics - Plasma Physics ,Plasma Physics (physics.plasm-ph) ,High Energy Physics - Phenomenology ,Pair production ,Nuclear Energy and Engineering ,Physics::Accelerator Physics ,Atomic physics - Abstract
Deep understanding of photon polarization impact on pair production is essential for the efficient creation of laser driven polarized positron beams, and demands a complete description of polarization effects in strong-field QED processes. We investigate, employing fully polarization resolved Monte Carlo simulations, the correlated photon and electron (positron) polarization effects in multiphoton Breit-Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We showed that the polarization of e^-e^+ pairs is degraded by 35\%, when the polarization of the intermediate photon is resolved, accompanied with an approximately 13\% decrease of the pair yield. Moreover, the polarization direction of energetic positrons in small angle region is reversed, which originates from the pair production of hard photons with polarization parallel with electric field.
- Published
- 2021