It is designed to both search for new light and weakly coupled elementary particles, and to detect and study the interactions of high-energy collider neutrinos.

These decays lead to a spectacular signal, the appearance of highly energetic particles, which FASER aims to detect.

No signal consistent with a dark photon was seen in their 2022 data and limits on previously unconstrained parameter space were set.

The LHC is the highest energy particle collider built so far, and therefore also the source of the most energetic neutrinos created in a controlled laboratory environment.

For this, they searched for events in which a high momentum track emerges from the central part of the FASERv detector volume and no activity in the most upstream veto layers, as expected from a muon neutrino interaction.

To study these neutrino interactions in greater detail, FASER also contains the dedicated FASERv sub-detector (which is pronounced FASERnu).

FASERnu will be capable of exploring the following physics domains: Located at the front end of FASER is the FASERν neutrino detector.