Aperitivo Scientifico: First Detection of Double Electron Capture in 124Xe with XENON1T

by Pietro Di Gangi (BO)

Friday 31 May 2019, 11:30 → 12:30 Europe/Rome

sala riunioni, 1st floor (Dipartimento di Fisica e Astronomia)

The XENON1T experiment at the LNGS opened the era of tonne-scale dark matter detectors and obtained the world's strongest constraint on the WIMP-nucleon cross section. The investigation of additional physics channels has led, among several other results, to the first observation of the double electron capture process of $^{124}$Xe. This is the rarest decay process ever directly observed in nature, with half-life of $1.8 \times 10^{22}$ years. The next phase of the project, XENONnT, will push forward the sensitivity to dark matter search and other rare processes by more than one order of magnitude, thanks to further background reduction, increased active xenon mass and total exposure.

DEC-XENON1T-digangi.pdf