Title: The Dawn of Multi-Messenger Collider Physics
Abstract:  The recent detection of neutrinos at the LHC has ushered in a new era of multi-messenger collider physics. Up to 2022, neutrinos had never been directly detected in the 50-year history of particle colliders. In 2023, the first 153 neutrinos were detected at FASER, a small, inexpensive detector located 480 m from ATLAS in the far-forward direction. These were at TeV energies, a previously unexplored energy range between fixed target and astroparticle experiments, and in the coming years, we expect ~10,000 events, including flavor-tagged neutrino and anti-neutrino events of all 3 flavors. I will talk about what one can do with TeV neutrinos, as well as the accompanying broad program of searches for long-lived particles and other BSM physics. These developments have motivated the Forward Physics Facility, an underground cavern that will allow the LHC to fully exploit this new capability in the HL-LHC era. The FPF will house several experiments, which will detect thousands of neutrinos each day, with far-reaching implications for neutrino physics, QCD, astroparticle experiments, and BSM searches. I will present the latest updates to the FPF’s plans and timeline.