Search for Kilogram-scale Dark Matter with Precision Displacement Sensors

Understand

The search for dark matter has been performed mainly for weakly interacting massive particles and massive compact halo objects, and the intermediate mass region has not been investigated experimentally.

• A method to search dark matter with precision displacement sensors is suggested for this mass range.
• The search is performed by detecting a characteristic motion of a test mass when it is attracted by a dark matter particle through gravity.
• Two different types of displacement sensors are examined: optically levitated microspheres and laser interferometers for gravitational wave detection.