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arXiv · 2002.11761

New Test of the Gravitational $1/r^2$ Law at Separations down to 52 $μ$m

J. G. Lee·E. G. Adelberger·T. S. Cook·S. M. Fleischer·B. R. Heckel
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Abstract

We tested the gravitational $1/r^2$ 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 $1/r^2$ law at two different length scales. We took data at detector-attractor separations between $52~μ$m and 3.0 mm. Newtonian gravity gave an excellent fit to our data, limiting with 95\% confidence any gravitational-strength Yukawa interactions to ranges $< 38.6~μ$m.

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J. G. Lee, E. G. Adelberger, T. S. Cook, S. M. Fleischer, B. R. Heckel. 2020-02-26. New Test of the Gravitational $1/r^2$ Law at Separations down to 52 $μ$m. https://doi.org/10.1103/physrevlett.124.101101

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