Thursday, October 22, 2020, 16:00
online only
Laura Baudis, Zurich University
Abstract:
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS)
in Italy, acquired data until the end of 2018. At its core, it housed a
two-phase (liquid/gas) xenon time projection chamber with 2 tons (3.2
tons in total) of liquid xenon. Built to primarily search for Weakly
Interacting Massive Particles as dark matter candidates, it was also
sensitive to other rare interactions, due to its unprecedented low
background noise. Recently, the XENON collaboration reported an excess
of electronic recoil events at low energies. After an introduction to
the liquid xenon technology, I will discuss the new XENON1T results and
its various interpretations. I will end with presenting the status of
XENONnT, to operate a new TPC with 6 tons of liquid xenon (8.4 tons in
total), currently in commissioning stage at LNGS.