Photon polarization effects in polarized electron-positron pair production in a strong laser field

Ya Nan Dai; Bai Fei Shen; Jian Xing Li; Rashid Shaisultanov; Karen Z. Hatsagortsyan; Christoph H. Keitel; Yue Yue Chen

doi:10.1063/5.0063633

Photon polarization effects in polarized electron-positron pair production in a strong laser field

Ya Nan Dai
, Bai Fei Shen
, Jian Xing Li
, Rashid Shaisultanov
, Karen Z. Hatsagortsyan
, Christoph H. Keitel
, Yue Yue Chen

School of Physics

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Deep understanding of the impact of photon polarization on pair production is essential for the efficient generation of laser-driven polarized positron beams and demands a complete description of polarization effects in strong-field QED processes. Employing fully polarization-resolved Monte Carlo simulations, we investigate correlated photon and electron (positron) polarization effects in the multiphoton Breit-Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We show that the polarization of e-e+ pairs is degraded by 35% when the polarization of the intermediate photon is resolved, accompanied by an ∼13% decrease in the pair yield. Moreover, in this case, the polarization direction of energetic positrons at small deflection angles can even be reversed when high-energy photons with polarization parallel to the laser electric field are involved.

Original language	English
Article number	014401
Journal	Matter and Radiation at Extremes
Volume	7
Issue number	1
DOIs	https://doi.org/10.1063/5.0063633
State	Published - 1 Jan 2022

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10.1063/5.0063633

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title = "Photon polarization effects in polarized electron-positron pair production in a strong laser field",

abstract = "Deep understanding of the impact of photon polarization on pair production is essential for the efficient generation of laser-driven polarized positron beams and demands a complete description of polarization effects in strong-field QED processes. Employing fully polarization-resolved Monte Carlo simulations, we investigate correlated photon and electron (positron) polarization effects in the multiphoton Breit-Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We show that the polarization of e-e+ pairs is degraded by 35\% when the polarization of the intermediate photon is resolved, accompanied by an ∼13\% decrease in the pair yield. Moreover, in this case, the polarization direction of energetic positrons at small deflection angles can even be reversed when high-energy photons with polarization parallel to the laser electric field are involved.",

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T1 - Photon polarization effects in polarized electron-positron pair production in a strong laser field

AU - Dai, Ya Nan

AU - Shen, Bai Fei

AU - Li, Jian Xing

AU - Shaisultanov, Rashid

AU - Hatsagortsyan, Karen Z.

AU - Keitel, Christoph H.

AU - Chen, Yue Yue

PY - 2022/1/1

Y1 - 2022/1/1

N2 - Deep understanding of the impact of photon polarization on pair production is essential for the efficient generation of laser-driven polarized positron beams and demands a complete description of polarization effects in strong-field QED processes. Employing fully polarization-resolved Monte Carlo simulations, we investigate correlated photon and electron (positron) polarization effects in the multiphoton Breit-Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We show that the polarization of e-e+ pairs is degraded by 35% when the polarization of the intermediate photon is resolved, accompanied by an ∼13% decrease in the pair yield. Moreover, in this case, the polarization direction of energetic positrons at small deflection angles can even be reversed when high-energy photons with polarization parallel to the laser electric field are involved.

AB - Deep understanding of the impact of photon polarization on pair production is essential for the efficient generation of laser-driven polarized positron beams and demands a complete description of polarization effects in strong-field QED processes. Employing fully polarization-resolved Monte Carlo simulations, we investigate correlated photon and electron (positron) polarization effects in the multiphoton Breit-Wheeler pair production process during the interaction of an ultrarelativistic electron beam with a counterpropagating elliptically polarized laser pulse. We show that the polarization of e-e+ pairs is degraded by 35% when the polarization of the intermediate photon is resolved, accompanied by an ∼13% decrease in the pair yield. Moreover, in this case, the polarization direction of energetic positrons at small deflection angles can even be reversed when high-energy photons with polarization parallel to the laser electric field are involved.

UR - https://www.scopus.com/pages/publications/85120179579

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DO - 10.1063/5.0063633

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JO - Matter and Radiation at Extremes

JF - Matter and Radiation at Extremes

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ER -

Photon polarization effects in polarized electron-positron pair production in a strong laser field

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