Roshan Abraham (UC Irvine)

Date: Tue. January 30th, 2024, 11:30 am-12:30 pm
Location: Foldy Room, Rock 221

Neutrino Physics and Dark Matter Searches at the Forward Physics Facility at the LHC

The recent observation of collider neutrinos by the FASER collaboration highlights the potential the forward direction at the LHC has for neutrino physics. In the HL-LHC era, we expect a significant number of neutrinos in the forward direction, opening the way for precision studies using collider neutrinos at the proposed Forward Physics Facility (FPF). In this talk, I will present some phenomenological studies in this direction. i) The electromagnetic properties of neutrinos (magnetic moments, milli-charge, charge radius) have attracted significant interest recently. We make use of the enhanced neutrino flux expected in the HL-LHC era along with the sophisticated detectors at the FPF to constrain these properties, as well as the weak mixing angle. ii) If a new sterile state exists that couple to SM neutrino via the photon through a dipole portal, then it will also leave a signature in these detectors via up-scattering. This allows us to constrain the magnetic dipole moment interaction between SM neutrinos and this new sterile state. Furthermore, these neutrino detectors can also be used to probe some light dark matter models. We present some results in this direction.