קולוקוויום מיוחד בפיזיקה: Direct Detection of sub-GeV Dark Matter: A New Frontier

Prof. Yossef Dothan Memorial Lecture

Zoom: https://tau-ac-il.zoom.us/j/82946404349

Abstract: 

Dark matter makes up 85% of the matter in our Universe, but we have yet to learn its identity.  While most experimental searches focus on Weakly Interacting Massive Particles (WIMPs) with masses above the proton (about 1 GeV/c^2), many natural dark-matter candidates have masses below the proton and are invisible in traditional WIMP searches.  In this talk, I will discuss the search for dark matter with masses between about 500 keV/c^2 to 1 GeV/c^2 (“sub-GeV dark matter”), which has seen tremendous progress in the last few years.  I will describe several direct-detection strategies, and discuss how to search for dark matter interactions with electrons and nuclei in various target materials, such as noble liquids and semiconductors.  I will in particular highlight SENSEI, a funded experiment that uses ultra-low-threshold silicon CCD detectors (“Skipper CCDs”) capable of detecting even single electrons.  I will describe the latest results from SENSEI, and how SENSEI and other experiments expect to probe orders of magnitude of novel dark matter parameter space in the next few years. 

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מארגן האירוע: פרופ' עמיאל שטרנברג