Masayuki Wada (Princeton) " WIMP Dark Matter Search from Ionization Channel in DarkSide-50"

Abstract:  
In spite of a wide range of observational evidence, the mystery of dark matter is still present and dark matter remains to be directly detected. One of the most popular Dark Matter candidates is the Weakly Interacting Massive Particle (WIMP). In this talk, I present two results from the DarkSide-50 experiment for high-mass WIMP search and for low-mass WIMP search. In the low-mass WIMP search, there is an excess over the known background events at the small number of electrons region (Ne < 7). An updated study on this excess will be presented.