Spin-Dependent Axion Generation with Controllable Emission Angles in Strong Laser Fields
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916868511498240 |
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| author | Chen, Jia-Ding Liu, Hang Zhuang, Kai-Hong Shen, Baifei He, Pei-Lun Chen, Yue-Yue |
| author_facet | Chen, Jia-Ding Liu, Hang Zhuang, Kai-Hong Shen, Baifei He, Pei-Lun Chen, Yue-Yue |
| contents | We investigate axion production in the collision between a spin-polarized relativistic electron beam and an ultraintense laser pulse. A spin-resolved Monte Carlo framework is developed to model axion-electron and axion-photon couplings in arbitrary electromagnetic fields, using quantum emission probabilities under the local constant field approximation. Owing to spin-dependent asymmetries in radiation probability, the emitted axions acquire a characteristic angular deflection tied to the initial electron polarization. This spin-dependent asymmetry enables control over the axion emission direction by adjusting the polarization of the electron beam and laser field. Simulations show that a dense and collimated axion beam ($\sim 10^{10} g_{ae}^2$) with a tunable deflection angle ($\sim$ mrad) can be produced within tens of femtoseconds using current laser technology. Our results establish a novel mechanism for manipulating axion trajectories and open a promising route toward laboratory-based searches for the axion-electron coupling. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_21596 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-Dependent Axion Generation with Controllable Emission Angles in Strong Laser Fields Chen, Jia-Ding Liu, Hang Zhuang, Kai-Hong Shen, Baifei He, Pei-Lun Chen, Yue-Yue High Energy Physics - Phenomenology We investigate axion production in the collision between a spin-polarized relativistic electron beam and an ultraintense laser pulse. A spin-resolved Monte Carlo framework is developed to model axion-electron and axion-photon couplings in arbitrary electromagnetic fields, using quantum emission probabilities under the local constant field approximation. Owing to spin-dependent asymmetries in radiation probability, the emitted axions acquire a characteristic angular deflection tied to the initial electron polarization. This spin-dependent asymmetry enables control over the axion emission direction by adjusting the polarization of the electron beam and laser field. Simulations show that a dense and collimated axion beam ($\sim 10^{10} g_{ae}^2$) with a tunable deflection angle ($\sim$ mrad) can be produced within tens of femtoseconds using current laser technology. Our results establish a novel mechanism for manipulating axion trajectories and open a promising route toward laboratory-based searches for the axion-electron coupling. |
| title | Spin-Dependent Axion Generation with Controllable Emission Angles in Strong Laser Fields |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2507.21596 |