FASER results on BSM physics

FASER is a small LHC experiment designed to search for light, weakly-interacting, long-lived particles produced in proton-proton collisions at the ATLAS interaction point. The recent BSM physics results from 2023 and 2024 are presented. The search for dark photons uses 27.0 fb$^{-1}$ of data collected by the FASER experiment in 2022. The search sets world-leading exclusion limits for dark photon masses 17 MeV $< m_{A'} <$ 70 MeV and couplings 2 $\times$ 10$^{-5} < \epsilon <$ 1 $\times$ 10$^{-4}$. The results of this analysis are also reinterpreted for the $B-L$ gauge boson model. The search for axion-like particles (ALPs) uses 57.7 fb$^{-1}$ of 2022 and 2023 data. This search provides world-leading exclusion limits for ALP masses 100 $< m_{a} <$ 250 MeV and couplings $3 \times 10^{-5}$ GeV$^{-1}< g_{aWW} < 5 \times 10^{-4}$ GeV$^{-1}$.