The ForwArd Search ExpeRiment (FASER) is located at the LHC at CERN and studies long-lived, weakly interacting particles produced in the forward direction of the ATLAS interaction point. The FASER$\nu$ detector, the primary component for neutrino detection, is composed of a high-density structure with a total mass of 1.1 tons of tungsten plates interleaved with emulsion films to allow LLPs and...
FASER searches new long lived particles. We discuss the model in which we localize extra U(1) symmetry and it is broken by dark higgs taking vacuum expectation value. We calculated FASER’s sensitivity to dark photon from off-shell dark higgs decay numerically. We find that the sensitivity region can be spanned to unexplored region compared with other production process of dark photon. We also...
SND@LHC started taking data at the beginning of Run 3 of the LHC. The experiment is designed to perform measurements with neutrinos produced in proton-proton collisions at the LHC in an energy range between 100 GeV and 1 TeV. It covers a previously unexplored pseudo-rapidity range of 7.2 < η < 8.4. The detector is located 480 m downstream of the ATLAS interaction point in the TI18 tunnel. The...
