Probing new physics at the LUXE experiment

Abstract

The proposed LUXE experiment (Laser und XFEL Experiment) at DESY Hamburg, using the electron beam from the European XFEL, aims to probe QED in the non-perturbative regime created in collisions between high-intensity laser pulses and high-energy electron or photon beams. This setup also provides a unique opportunity to probe physics beyond the standard model. In this proceedings, we show that by leveraging the large photon flux generated at LUXE, one can probe axion-like-particles (ALPs) up to a mass of 350 MeV and with a photon coupling of $3\times {10}^{-6}{\mathrm{GeV}}^{-1}$. This reach is comparable to the background-free projection from NA62. In addition, we will discuss other probes of new physics such as ALPs-electron coupling.

Comments: 6 pages, 3 figures; conference proceedings for ICHEP 2022 parallel talk on 9 Jul 2022, submitted to the Proceedings of Science