Observation of Collider Muon Neutrinos with the SND@LHC Experiment
R. Albanese (Sezione INFN di Napoli, 80126 Napoli, Italy, Università di Napoli “Federico II”, 80126 Napoli, Italy); A. Alexandrov (Sezione INFN di Napoli, 80126 Napoli, Italy); F. Alicante (Sezione INFN di Napoli, 80126 Napoli, Italy, Università di Napoli “Federico II”, 80126 Napoli, Italy); A. Anokhina (Affiliated with an institute covered by a cooperation agreement with CERN); T. Asada (Sezione INFN di Napoli, 80126 Napoli, Italy, Università di Napoli “Federico II”, 80126 Napoli, Italy); et al - Show all 140 authors
We report the direct observation of muon neutrino interactions with the SND@LHC detector at the Large Hadron Collider. A dataset of proton-proton collisions at collected by SND@LHC in 2022 is used, corresponding to an integrated luminosity of . The search is based on information from the active electronic components of the SND@LHC detector, which covers the pseudorapidity region of , inaccessible to the other experiments at the collider. Muon neutrino candidates are identified through their charged-current interaction topology, with a track propagating through the entire length of the muon detector. After selection cuts, 8 interaction candidate events remain with an estimated background of 0.086 events, yielding a significance of about 7 standard deviations for the observed signal.