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

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arxiv 2002.11761 v1 pith:4HI2SKUT submitted 2020-02-26 hep-ex physics.ins-det

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

classification hep-ex physics.ins-det
keywords datafoldgravitationalseparationstestattractorazimuthalbodies
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $52~\mu$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 $< 38.6~\mu$m.

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