New Test of the Gravitational 1/r² Law at Separations down to 52 μm

2020/02/26 by J. G. Lee, E. G. Adelberger, T. S. Cook +2 · 1 citation
Physics and Astronomy · #hep-ex #physics.ins-det

paper · pdf · doi:10.1103/physrevlett.124.101101

5 pages, 5 figures

arxiv created 2020/02/26 · arxiv updated 2020/03/25

Abstract

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.

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