5 research outputs found
SND@LHC: The Scattering and Neutrino Detector at the LHC
SND@LHC is a compact and stand-alone experiment designed to perform measurements with neutrinos produced at the LHC in the pseudo-rapidity region of . The experiment is located 480 m downstream of the ATLAS interaction point, in the TI18 tunnel. The detector is composed of a hybrid system based on an 830 kg target made of tungsten plates, interleaved with emulsion and electronic trackers, also acting as an electromagnetic calorimeter, and followed by a hadronic calorimeter and a muon identification system. The detector is able to distinguish interactions of all three neutrino flavours, which allows probing the physics of heavy flavour production at the LHC in the very forward region. This region is of particular interest for future circular colliders and for very high energy astrophysical neutrino experiments. The detector is also able to search for the scattering of Feebly Interacting Particles. In its first phase, the detector will operate throughout LHC Run 3 and collect a total of 250
Observation of collider muon neutrinos with the SND@LHC experiment
We report the direct observation of muon neutrino interactions with the
SND@LHC detector at the Large Hadron Collider. A data set of proton-proton
collisions at TeV collected by SND@LHC in 2022 is used,
corresponding to an integrated luminosity of 36.8. The search
is based on information from the active electronic components of the SND@LHC
detector, which covers the pseudo-rapidity region of 7.2 < \eta < 8.4,
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 0.076 events, yielding a significance of seven standard
deviations for the observed signal