https://doi.org/10.1140/epjc/s10052-015-3401-1
Regular Article - Theoretical Physics
Improved constraints on the coupling constants of axion-like particles to nucleons from recent Casimir-less experiment
1
Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences, St. Petersburg, 196140, Russia
2
Institute of Physics, Nanotechnology and Telecommunications, St. Petersburg State Polytechnical University, St. Petersburg, 195251, Russia
* e-mail: vmostepa@gmail.com
Received:
18
March
2015
Accepted:
8
April
2015
Published online:
24
April
2015
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 the Au or the Si sector of a rotating disc, arising due to two-axion exchange, is calculated. Over a wide region of axion masses, from eV to 0.9 eV, the obtained constraints are up to a factor of 60 stronger than the previously known ones following from the Cavendish-type experiment and measurements of the effective Casimir pressure.
© SIF and Springer-Verlag Berlin Heidelberg, 2015