Conveners
(PPD) R1-1 DM / Neutrino 5 | DM / Neutrino 5 (PPD)
- Stephen Sekula (SNOLAB and Queen's University)
The Super Cryogenic Dark Matter Search (SuperCDMS) experiment uses silicon and germanium calorimeters operating at cryogenic temperatures to search for dark matter interactions. In recent years, SuperCDMS HVeV (high voltage with eV resolution) detectors have enabled searches for sub-GeV dark matter candidates coupling to either nuclei or electrons such as low mass Weakly Interacting Massive...
Radon is the limiting background in many leading dark matter and low energy neutrino experiments. One way to mitigate radon background is to fill external experimental components with a clean cover gas such as N2. At SNOLAB, the radon concentration in the experiments cover gas system is monitored using a radon assay board. To improve the sensitivity of gas assays a new trapping mechanism is...
We present new Big Bang Nucleosynthesis (BBN) limits on the cosmic expansion rate or relativistic energy density, quantified via the number $N_\nu$ of equivalent neutrino species. We use the latest light element observations, neutron mean lifetime, and update our evaluation for the nuclear rates d + d → $^3$He + n and d + d → $^3$H + p. Combining this result with the independent constraints...
The MINERvA experiment was designed to measure neutrino-nucleus interactions using the NuMI beam at Fermilab. Between 2013 and 2017, 12x10^20 protons on target were delivered both in neutrino and antineutrino modes with an average neutrino energy of 6 GeV, providing a high statistics neutrino interaction data sample. Among neutrino interactions, a significant primary charged current process is...
Various forms of astrophysical evidence indicate the existence of Dark Matter (DM) which is predicted to account for about 85% of the matter in the universe. Our solar system moves through the hypothesized DM halo in our galaxy and many experiments pursuing different detection approaches are trying to observe the resulting DM particle flux.
Among them, SuperCDMS is a direct detection DM...
Leading cosmological surveys and models provide strong indications for cold Dark Matter (DM) being one of the major constituents of our Universe. There are many experimental efforts utilizing highly sensitive, low-background detectors with the goal of observing the hypothesized flux of DM halo particles streaming through the Earth.
The SuperCDMS experiment will employ two types of...
