Not only at the Large Hadron Collider, many new particle physics experiments are coming up to search the uncharted regions not covered by conventional collider experiments. One such experiment is the E320 experiment based at SLAC, USA [1], and another one is LUXE, based at DESY, Germany [2,3]. Here high-energy electron beams will collide with strong laser pulses to produce a very strong electric field.
This collision will produce Compton photons decaying to electron-positron pairs.
The electric field in the rest frame of electron-positron can be as high as 10^18 V/m, or beyond,
This very high electric field is unreachable in terrestrial experiments to date. The main goal of this experiment is to test the prediction of strong-field (SF) quantum electrodynamics (QED), by measuring the rate of production of electron-positron pairs and comparing it with that calculated from non-perturbative QED.
References:
[1] Chen, Z., Meuren, S., Gerstmayr, E., Yakimenko, V., Bucksbaum, P.,H., and Reis, D.,A., “Preparation of Strong-field QED Experiments at FACET-II,” doi:10.1364/HILAS.2022.HF4B.6
[2] Abramowicz, H., Acosta, U., Altarelli, M., …, Santra, A. et al. (LUXE Collaboration), “Conceptual Design Report for the LUXE Experiment”, Eur. Phys. J. Spec. Top., 230, 2445–2560 (2021). doi: https://doi.org/10.1140/epjs/s11734-021-00249-z.
[3] Abramowicz, H., Almanza, M., Altarelli, M., …, Santra, A. et al. (LUXE Collaboration), “Technical Design Report for the LUXE Experiment,” [arXiv:2305.10894 [hep-ex]]. doi: https://doi.org/10.48550/arXiv.2308.00515