Astroparticle Colloquia

The search for dark matter particles with DAMIC-M

by Alvaro E. Chavarria (The University of Chicago)

Europe/Rome
Ex-ISEF/Building-Main Lecture Hall (GSSI)

Ex-ISEF/Building-Main Lecture Hall

GSSI

20
Description

Abstract: Dark matter is a mysterious substance that constitutes 85% of the matter in our universe. Although its existence has been established from the enormous gravitational influence that it exerts throughout the universe, its fundamental nature remains unknown. An exciting possibility is that dark matter is made of particles that interact very weakly with atoms to induce low-energy nuclear or electronic recoils in an instrumented target on Earth. The DAMIC-M program searches for dark matter signals in the bulk silicon of skipper charge-coupled devices (CCDs) deployed deep underground. Thanks to their sensitivity to single ionized electrons, and the small band gap of silicon, skipper CCDs are particularly sensitive to the interactions of dark matter particles with MeV masses, a region of parameter space that we only recently began to explore.