6533b860fe1ef96bd12c3b13
RESEARCH PRODUCT
Limit on Lorentz-Invariance- and CPT-Violating Neutron Spin Interactions Using a $^3$He-$^{129}$Xe Comagnetometer
Werner HeilF. AllmendingerYu. SobolevUlrich SchmidtS. KarpukK. Tullneysubject
PhysicsSpinsField (physics)Atomic Physics (physics.atom-ph)FOS: Physical sciences02 engineering and technologyLorentz covariance021001 nanoscience & nanotechnology01 natural sciencesPhysics - Atomic PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Sidereal timeQuantum electrodynamics0103 physical sciencesPrecessionNeutron010306 general physics0210 nano-technologyAnisotropySpin (physics)description
We performed a search for a Lorentz-invariance- and CPT-violating coupling of the $^3$He and $^{129}$Xe nuclear spins to posited background fields. Our experimental approach is to measure the free precession of nuclear spin polarized $^3$He and $^{129}$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 $\tilde{b}^n_{\bot}< 8.4 \cdot 10^{-34}$ GeV (68\% C.L.). Furthermore, this technique was modified to search for an electric dipole moment (EDM) of $^{129}$Xe.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-07-22 |