Limit on Lorentz-Invariance- and CPT-Violating Neutron Spin Interactions Using a $^3$He-$^{129}$Xe Comagnetometer
| Autor: | Werner Heil, F. Allmendinger, Yu. Sobolev, Ulrich Schmidt, S. Karpuk, K. Tullney |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Spins Field (physics) Atomic Physics (physics.atom-ph) FOS: Physical sciences 02 engineering and technology Lorentz covariance 021001 nanoscience & nanotechnology 01 natural sciences Physics - Atomic Physics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Sidereal time Quantum electrodynamics 0103 physical sciences Precession Neutron 010306 general physics 0210 nano-technology Anisotropy Spin (physics) |
| Popis: | 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. Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 2016 |
| Databáze: | OpenAIRE |
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