The neutrino floor at ultra-low threshold

Understand

By lowering their energy threshold direct dark matter searches can reach the neutrino floor with experimental technology now in development.

• The 7Be flux can be detected with $\sim 10$ eV nuclear recoil energy threshold and 50 kg-yr exposure.
• The pep flux can be detected with $\sim 3$ ton-yr exposure, and the first detection of the CNO flux is possible with similar exposure.
• The pp flux can be detected with threshold of $\sim$ eV and only $\sim$ kg-yr exposure.