Comment on "An Improved Experimental Limit on the Electric-Dipole Moment of the Neutron," C.A.Baker et al [hep-ex/0602020]

TL;DR

This paper highlights how Earth's rotation can create a false electric-dipole moment signal in neutron EDM experiments, emphasizing the need to account for this effect in experimental analyses.

Contribution

It identifies and discusses the impact of Earth's rotation on neutron EDM measurements, which was previously overlooked.

Findings

Earth's rotation induces a measurable apparent EDM effect.

Neglecting Earth's rotation can lead to incorrect EDM limits.

The paper suggests correcting for Earth's rotation in future experiments.

Abstract

We point out that the rotation of the Earth leads to a non-negligible apparent electric-dipole moment effect for this experiment.