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High Energy Physics - Phenomenology

arXiv:2304.04367 (hep-ph)
[Submitted on 10 Apr 2023]

Title:Angle-dependent pair production in the polarized two-photon Breit-Wheeler process

Authors:Qian Zhao, Yan-Xi Wu, Mamutjan Ababekri, Zhong-Peng Li, Liang Tang, Jian-Xing Li
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Abstract:The advent of laser-driven high-intensity $\gamma$-photon beams has opened up new opportunities for designing advanced photon-photon colliders. Such colliders have the potential to produce a large yield of linear Breit-Wheeler (LBW) pairs in a single shot, which offers a unique platform for studying the polarized LBW process. In our recent work [Phys. Rev. D 105, L071902(2022)], we investigated the polarization characteristics of LBW pair production in CP $\gamma$-photon collisions. To fully clarify the polarization effects involving both CP and LP $\gamma$-photons, here we further investigate the LBW process using the polarized cross section with explicit azimuthal-angle dependence due to the base rotation of photon polarization vectors. We accomplished this by defining a new spin basis for positrons and electrons, which enables us to decouple the transverse and longitudinal spin components of $e^\pm$. By means of analytical calculations and Monte Carlo simulations, we find that the linear polarization of photon can induce the highly angle-dependent pair yield and polarization distributions. The comprehensive knowledge of the polarized LBW process will also open up avenues for investigating the higher-order photon-photon scattering, the laser-driven quantum electrodynamic plasmas and the high-energy astrophysics.
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:2304.04367 [hep-ph]
  (or arXiv:2304.04367v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.2304.04367
Related DOI: https://doi.org/10.1103/PhysRevD.107.096013

Submission history

From: Qian Zhao [view email]
[v1] Mon, 10 Apr 2023 03:38:12 UTC (5,253 KB)
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