New constraints on Lorentz invariance violation from the neutron electric dipole moment

Abstract

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 $d_{12}<15\times 10^{-25}e\mathrm{cm}$ and $d_{24}<10\times 10^{-25}e\mathrm{cm}$ 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 ${\mathcal{E}}_{LV}>10^{10}$~GeV.

Submitted to Phys. Rev. Lett

References in corpus (3)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Test of Lorentz invariance with spin precession of ultracold neutrons
• Electric Dipole Moments as Probes of CPT Invariance

Cited by in corpus (7)

• Search for axion-like dark matter through nuclear spin precession in electric and magnetic fields
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• A magnetically shielded room with ultra low residual field and gradient
• New source for ultracold neutrons at the Institut Laue-Langevin
• Development of a multifunction module for the neutron electric dipole moment experiment at PSI
• Tests of Lorentz symmetry
• Lorentz Covariant Lattice Gauge Theory