6533b7d1fe1ef96bd125cd93
RESEARCH PRODUCT
New constraints on Lorentz invariance violation from the neutron electric dipole moment
G. QuéménerGuillaume PignolG. PetzoldtJacek ZejmaYu. SobolevE. PierreReinhold HenneckA. KozelaA. MtchedlishviliOscar Naviliat-cuncicG. BanPhilip HarrisKlaus KirchK. F. SmithP. Schmidt-wellenburgM. G. D. Van Der GrintenN. V. KhomutovS. RocciaGeza ZsigmondK. GreenPeter FierlingerKazimierz BodekMartin FertlSt. KistrynY. LemièreM. DaumD. ShiersM. HorrasAndreas KnechtI. AltarevC.a. BakerT. LefortFlorian M. PiegsaNatalis SeverijnsBernhard LaussPlamen IaydjievBeatrice FrankeP. GeltenbortJ. M. PendleburyF. KuchlerS. N. IvanovJ. ZennerD. Rebreyendsubject
Electromagnetic fieldPhysicsSpectrometerNeutron electric dipole moment010308 nuclear & particles physicsFOS: Physical sciencesGeneral Physics and AstronomyLorentz covariance[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesSignalModulationQuantum electrodynamics0103 physical sciencesUltracold neutronsSensitivity (control systems)Nuclear Experiment (nucl-ex)Nuclear Experiment010306 general physicsNuclear Experimentdescription
We propose an original test of Lorentz invariance in the interaction between a particle spin and an electromagnetic field and report on a first measurement using ultracold neutrons. We used a high sensitivity neutron electric dipole moment (nEDM) spectrometer and searched for a direction dependence of a nEDM signal leading to a modulation of its magnitude at periods of 12 and 24 hours. We constrain such a modulation to $d_{12} < 15 \times 10^{-25} \ e\,{\rm cm}$ and $d_{24} < 10 \times 10^{-25} \ e\,{\rm cm}$ at 95~\% C.L. The result translates into a limit on the energy scale for this type of Lorentz violation effect at the level of ${\cal E}_{LV} > 10^{10}$~GeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 |