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<p>The detection of light dark matter (DM) is a longstanding challenge in terrestrial experiments. High-intensity facilities with intense electromagnetic field may provide a plausible strategy to study strong-field particle physics and search for light DM. In this work, we propose to search for light DM particles through nonlinear Compton scattering in the presence of a high-intensity laser field. An ultra-relativistic electron beam collides with an intense laser pulse containing a number of optical photons and then decays to a pair of DM particles. We take into account the Dirac-type fermionic DM in a leptophilic scenario and the DM-electron interactions in the framework of effective field theory. The decay rates of an electron to a DM pair are calculated for effective DM operators of different bilinear products. We show the sensitivities of laser induced Compton scattering to the effective cutoff scale for DM lighter than 1 MeV and compare them with direct detection experiments.</p>

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Laser induced Compton scattering to dark matter in effective field theory

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月2日

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  • Kai Ma,
  • Tong Li

摘要

The detection of light dark matter (DM) is a longstanding challenge in terrestrial experiments. High-intensity facilities with intense electromagnetic field may provide a plausible strategy to study strong-field particle physics and search for light DM. In this work, we propose to search for light DM particles through nonlinear Compton scattering in the presence of a high-intensity laser field. An ultra-relativistic electron beam collides with an intense laser pulse containing a number of optical photons and then decays to a pair of DM particles. We take into account the Dirac-type fermionic DM in a leptophilic scenario and the DM-electron interactions in the framework of effective field theory. The decay rates of an electron to a DM pair are calculated for effective DM operators of different bilinear products. We show the sensitivities of laser induced Compton scattering to the effective cutoff scale for DM lighter than 1 MeV and compare them with direct detection experiments.