Speaker
Description
FASER is an experiment dedicated to searching for light, extremely weakly-interacting particles at LHC. Such particles may be produced in the very forward direction of the LHC's high-energy collisions and then decay to visible particles inside the FASER detector, which is placed 480 m downstream of the ATLAS interaction point. FASER also includes a sub-detector, FASERν, designed to detect neutrinos produced in the LHC collisions and to study their properties. Recently, FASER reported the first direct observation of neutrino interactions at a particle collider experiment. Around 153 neutrino candidate events (>16 sigma) are identified in a 13.6 TeV center-of-mass energy pp collision data set of 35.4/fb using the active electronic components of FASER. These events are consistent with the characteristics expected from neutrino interactions in terms of secondary particle production and spatial distribution, and they imply the observation of both neutrinos and anti-neutrinos with an incident neutrino energy of significantly above 200 GeV.
