Speaker
Kyle Leach
(Colorado School of Mines)
Description
The Beryllium Electron-capture in Superconducting Tunnel junctions (BeEST) experiment is a precision search for BSM physics that measures the low-energy nuclear recoil from the EC decay of 7Be. In Phase-III, we have scaled the experiment to multipixel arrays of STJs as well as employing a range of systematics improvements on both the technical and spectral modeling aspects of the experiment. In this talk, we will discuss recent results from this improved experimental setup including the first direct limits on the spatial extent of an EC-induced neutrino wavepacket and the search for heavy neutral leptons in the ~100 keV mass range.
Primary author
Kyle Leach
(Colorado School of Mines)
