Speaker
Description
The nature of dark matter is a fundamental problem in such fields as elementary
particle physics, astrophysics and cosmology. There are lots of experiments aimed
at the detection of dark matter. Among them, there is DarkSide-50 at Laboratori
Nazionali del Gran Sasso (LNGS), Italy, which uses argon as the target material and
measures the recoil energy of target particles, nuclei and electrons, in forms of
scintillation and ionization signals. In this talk, we present the current results of
several dark matter detection approaches in the DarkSide-50 experiment in the low
(less than a few GeV/c^2) mass region. These results include the most stringent
upper limit on the spin-independent dark matter nucleon cross section for masses
between 40 MeV/c^2 and 3.6 GeV/c^2, which was obtained by using the ionization
signal only and by including the Migdal effect in the analysis.
