Abstract
Minicharged particles arise in many extensions of the standard model. Their contribution to the vacuum polarization modifies Coulomb’s law via the Uehling potential. In this Letter, we argue that tests for electromagnetic fifth forces can therefore be a sensitive probe of minicharged particles. In the low mass range existing constraints from Cavendish type experiments provide the best model-independent bounds on minicharged particles.
- Received 26 May 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.080402
©2009 American Physical Society