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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.10342 |
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| _version_ | 1866909318896418816 |
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| author | Macleod, Alexander J. King, Ben |
| author_facet | Macleod, Alexander J. King, Ben |
| contents | Direct measurement of the elastic scattering of real photons on an electromagnetic field would allow the fundamental low-energy constants of quantum electrodynamics (QED) to be experimentally determined. We show that scenarios involving the collision of three laser beams have several advantages over conventional two-beam scenarios. The kinematics of a three-beam collision allows for a higher signal-to-noise ratio in the detection region, without the need for polarimetry and separates out contributions from different orders of photon scattering. A planar configuration of colliding a photon beam from an x-ray free electron laser with two optical beams is studied in detail. We show that measurements of elastic photon scattering and vacuum birefringence are possible with currently available technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_10342 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fundamental constants from photon-photon scattering in three-beam collisions Macleod, Alexander J. King, Ben High Energy Physics - Phenomenology Optics Plasma Physics Direct measurement of the elastic scattering of real photons on an electromagnetic field would allow the fundamental low-energy constants of quantum electrodynamics (QED) to be experimentally determined. We show that scenarios involving the collision of three laser beams have several advantages over conventional two-beam scenarios. The kinematics of a three-beam collision allows for a higher signal-to-noise ratio in the detection region, without the need for polarimetry and separates out contributions from different orders of photon scattering. A planar configuration of colliding a photon beam from an x-ray free electron laser with two optical beams is studied in detail. We show that measurements of elastic photon scattering and vacuum birefringence are possible with currently available technology. |
| title | Fundamental constants from photon-photon scattering in three-beam collisions |
| topic | High Energy Physics - Phenomenology Optics Plasma Physics |
| url | https://arxiv.org/abs/2406.10342 |