Highly charged ions (HCIs) offer exceptional prospects for next-generation optical clocks due to their suppressed sensitivity to external perturbations and their potential to probe physics beyond the Standard Model, which could help lift the veil on the nature of dark matter and dark energy. Among them, californium (Cf) ions host optical transitions with predicted ultra-narrow linewidths and...
Many well theoretically motivated models of ultralight dark matter are expected to give rise to feeble oscillatory forces on macroscopic objects. Optically trapped sensors have high force sensitivies but have remained relatively unexplored in this context. In this work we propose a new, tunable, optically trapped sensor specifically designed to detect such forces. Our design features a...
Dark matter studies and search results published by experimental, collider and cosmological communities are frequently reported using different conventions, units and parameterisations. Limits may appear as bounds on cross-sections, event rates, branching fractions, effective couplings or model-specific parameters (for example kinetic mixing parameters, mediator couplings, or axion-photon...
