Lorentz and CPT Tests in Neutron and Storage-Ring EDM Experiments
Abstract
We investigate Lorentz- and CPT-violating effects in neutron and storage-ring electric dipole moment (EDM) experiments within the framework of the Standard-Model Extension (SME). For neutron EDM experiments, perturbation theory is applied to derive leading-order contributions to the spin precession frequency arising from Lorentz and CPT violation. For storage-ring experiments, a generalized Bargmann-Michel-Telegdi equation is used to determine the corresponding spin-precession modifications. The analysis establishes explicit correspondences between measured EDMs and specific SME coefficients, providing a basis for setting the first limits on several previously unconstrained coefficients for Lorentz violation in future studies.
Cite
@article{arxiv.2601.08899,
title = {Lorentz and CPT Tests in Neutron and Storage-Ring EDM Experiments},
author = {Yunhua Ding},
journal= {arXiv preprint arXiv:2601.08899},
year = {2026}
}
Comments
4 pages, presented at the Tenth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, May 15-19, 2025