Summary:

The successful establishment of a wide range of results consistent with Standard Model (SM) expectations at the Large Hadron Collider (LHC) and beyond has placed a renewed interest on very exotic particles and non-standard experimental signatures as potential channels for the discovery of physics beyond the SM. This workshop assembles experimentalists and theorists from around the world to assess the state of current searches for long-lived particles at the LHC and beyond; axions; dark matter candidates, including those involving alternatives to the WIMP paradigm; and to discuss potential discovery possibilities with future experiments, including linear and future circular colliders.

Topics:

Long-lived particles (dark scalars; dark photons; heavy neutral leptons / right-handed neutrinos; RPV SUSY particles; stable, massive charged particles; monopoles; etc.)
Dark matter candidates (WIMPS and alternatives)
Axions and axion-like particles
Other exotic phenomena