Speaker
Description
We discuss the impact of the coupling of neutrinos with a new light neutral gauge boson, $Z^\prime$, with a mass of less than 500 MeV in meson decay and short-baseline neutrino experiments. 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 $Z^{\prime}$, ($M^+\to l^+ \nu Z^\prime$) followed by the subsequent decay of $Z^\prime$ into the pair of neutrino and anti-neutrino, ($Z^\prime \to \nu\bar{\nu}$). We explain how meson decay experiments such as NA62 and PIENU as well as short-baseline experiments such as DUNE near detector and FASER$\nu$ can constrain the scenario.
