Sensitivities to secret neutrino interaction at FASERν

We study the impact of the coupling of neutrinos with a new light neutral gauge boson, Z^\prime with a mass of less than 500 {\rm MeV} in FASER\nuexperiment. Scenarios in which a light gauge boson is coupled to neutrinos are motivated within numerous contexts which are designed to explain various anomalies in particle physics and cosmology. This interaction leads to a new decay mode for charged mesons to a light lepton plus neutrino and...