Monday, April 6, 2020

New test of the gravitational 1/r2 law at separations down to 52μm

We tested the gravitational 1/r2 law using a stationary torsion-balance detector and a rotating attractor containing test bodies with both 18-fold and 120-fold azimuthal symmetries that simultaneously tests the 1/r2 law at two different length scales. We took data at detector-attractor separations between 52  μm and 3.0 mm. Newtonian gravity gave an excellent fit to our data, limiting with 95% confidence any gravitational-strength Yukawa interactions to ranges <38.6  μm.

  • Received 3 December 2019
  • Accepted 7 February 2020

DOI:https://ift.tt/3dYvtOg

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics



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