Improved constraints on the coupling constants of axion-like particles to nucleons from recent Casimir-less experiment

Abstract

We obtain improved constraints on the coupling constants of axion-like particles to nucleons from a recently performed Casimir-less experiment. For this purpose, the differential force between a Au-coated sphere and either Au or Si sectors of a rotating disc, arising due to two-axion exchange, is calculated. Over a wide region of axion masses from 1.7 meV to 0.9 eV the obtained constraints are stronger up to a factor of 60 than the previously known ones following from the Cavendish-type experiment and measurements of the effective Casimir pressure.

6 pages, 2 figures; minor changes have been made in accordance to the version accepted for publication in Eur. Phys. J. C

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• Constraining axion coupling constants from measuring the Casimir interaction between polarized test bodies
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• Axion Bounds from Quantum Technology
• Testing Gravity and Predictions Beyond the Standard Model at Short Distances: The Casimir Effect
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• Constraining Axion-to-Nucleon interaction via ultranarrow linewidth in the Casimir-less regime
• Axion like particles, fifth force and neutron interferometry