When a xenon atom’s nucleus recoils from a dark matter particle or any other incident radiation, the atom’s electron cloud is expected to fall behind, resulting in possible ionization and excitation. This phenomenon is called the Migdal effect and is attracting attention as it can improve the sensitivity of direct dark matter search in the sub-GeV/c$^2$ regime. In a liquid xenon detector like...
The sensitivity of current dark matter experiments to sub-GeV mass dark matter candidates can be substantially improved by the Migdal effect, which predicts a finite probability for a nuclear recoil interaction to be accompanied by atomic excitation or ionization. The additional Migdal energy deposition enhances observable signals in experiments that measure scintillation and ionizations, and...
The search for Dark Matter is one of the most fascinating themes of modern physics and astrophysics, but also one of the most difficult to study. The innovative Underground Argon Project (UAr) is part of this context and a fundamental pillar of the Argon Dark Matter search program, led by the Global Argon Dark Matter Collaboration. The aims of the UAr project is to achieve the procurement of...
We are developing a dual-phase crystalline/vapor xenon time projection chamber (TPC) as a potential upgrade path for the LZ or XENON dark matter search experiments, after they finish their current experimental operations. We expect it to enable full exclusion or tagging of the dominant radon-chain backgrounds in these instruments, while maintaining all of the known instrumental benefits and...
The SuperCDMS Collaboration is currently building SuperCDMS SNOLAB, an experiment designed to search for nucleon-coupled dark matter in the 0.5-5 GeV/c$^2$ mass range. Looking to the future, the Collaboration has developed a set of experience-based upgrade scenarios, as well as novel directions, to extend the search for dark matter using the SuperCDMS technology in the SNOLAB facility. The...
