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# 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 $d_{12} < 15 \times 10^{-25} \ e\,{\rm cm}$ 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.
Type de document :
Article dans une revue

http://hal.in2p3.fr/in2p3-00495497
Contributeur : Emmanuelle Vernay <>
Soumis le : lundi 28 juin 2010 - 08:38:00
Dernière modification le : lundi 22 juin 2020 - 17:14:12

### Citation

I. Altarev, C. A. Baker, G. Ban, K. Bodek, M. Daum, et al.. New constraints on Lorentz invariance violation from the neutron electric dipole moment. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2010, 92, pp.51001. ⟨10.1209/0295-5075/92/51001⟩. ⟨in2p3-00495497⟩

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