Speaker
Mukul Sholapurkar
(Stony Brook University)
Description
Several low-threshold detectors looking for sub-GeV dark matter have observed a large rate of low-energy events. The SENSEI experiment, which looks for small ionization signals in Silicon Skipper CCD to search for sub-GeV dark matter, has also observed a large single-electron event rate which cannot be explained by previously explored backgrounds. In this talk, I will focus on radiative backgrounds like Cherenkov radiation and Luminescence from electron-hole recombination in the SENSEI detector. With results from a detailed simulation of these backgrounds, I will show that a significant fraction of the observed single-electron rate can be attributed to these radiative processes.
Author
Mukul Sholapurkar
(Stony Brook University)
Co-authors
Rouven Essig
Daniel Egana-Ugrinovic
(CN Yang Institute, Stony Brook University)
Peizhi Du
