New Limits on the Couplings of Light Pseudoscalars from Equivalence Experiments
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
The exchange of light pseudoscalar quanta between fermions leads to long-range spin-dependent forces in order g^2, where g is the pseudoscalar-fermion coupling constant. We demonstrate that laboratory bounds on the Yukawa couplings of pseudoscalars to nucleons can be significantly improved using results from recent equivalence principle experiments, which are sensitive to the spin-independent long-range forces that arise in order g^4 from two-pseudoscalar exchange.
Keywords
Cite
@article{arxiv.hep-ph/9905408,
title = {New Limits on the Couplings of Light Pseudoscalars from Equivalence Experiments},
author = {Ephraim Fischbach and Dennis E. Krause},
journal= {arXiv preprint arXiv:hep-ph/9905408},
year = {2009}
}
Comments
12 pages, Revtex, with 2 Postscript figures (to appear in Physical Review Letters)