Limit on Lorentz-Invariance- and CPT-Violating Neutron Spin Interactions Using a $^3$He-$^{129}$Xe Comagnetometer
High Energy Physics - Phenomenology
2016-07-27 v1 Atomic Physics
Abstract
We performed a search for a Lorentz-invariance- and CPT-violating coupling of the He and Xe nuclear spins to posited background fields. Our experimental approach is to measure the free precession of nuclear spin polarized He and Xe atoms using SQUID detectors. As the laboratory reference frame rotates with respect to distant stars, we look for a sidereal modulation of the Larmor frequencies of the co-located spin samples. As a result we obtain an upper limit on the equatorial component of the background field GeV (68\% C.L.). Furthermore, this technique was modified to search for an electric dipole moment (EDM) of Xe.
Cite
@article{arxiv.1607.06719,
title = {Limit on Lorentz-Invariance- and CPT-Violating Neutron Spin Interactions Using a $^3$He-$^{129}$Xe Comagnetometer},
author = {Fabian Allmendinger and Ulrich Schmidt and Werner Heil and Sergej Karpuk and Yuri Sobolev},
journal= {arXiv preprint arXiv:1607.06719},
year = {2016}
}
Comments
Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 2016