4 papers
Probing For Non-Gravitational Long-Range Dark Matter Interactions
M. P. Ross, S. K. Apple, E. A. Shaw +3
Dark matter remains a mystery in fundamental physics. The only evidence for dark matter's existence is from gravitational interactions. We constructed a precision torsion balance e…
An Improved Torsion Balance Test of the Equivalence Principle Towards the Sun
M. P. Ross, E. A. Shaw, C. Gettings +3
We search for violations of the Equivalence Principle towards the Sun using a rotating torsion balance apparatus. We set 95\%-confidence limits on violations with beryllium and alu…
A Search for Ultra-Light Vector Dark Matter with a Rotating Torsion Balance
M. P. Ross, E. A. Shaw, C. Gettings +3
We search for ultra-light vector dark matter interacting with a rotating torsion balance with a baryon minus lepton number composition dipole. Our search spans candidate masses in…
Demonstration of the minimal coupling of horizontal accelerations to rotations in a torsion balance suspended from three wires
Amit Singh Ubhi, Clive C. Speake, Emilia Chick +1
The Cavendish torsion balance is the instrument of choice for measuring weak forces, such as gravity. Although torsion balances have extremely high sensitivity for measuring forces…