Abstract
This article presents results of measuring the neutron electric dipole moment (EDM) made by the Institut Laue-Langevin (ILL) reactor using the Petersburg Nuclear Physics Institute (PNPI) experimental installation. A double-chamber magnetic resonance spectrometer with prolonged holding of ultracold neutrons has been employed. The results determine the upper limit for EDM neutron quantity equal to |d n | < 5.5 × 10−26 e cm at a 90% confidence level.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. M. Purcell and N. F. Ramsey, “On the possibility of electric dipole moments for elementary particles and nuclei,” Phys. Rev. 78, 807 (1950).
T. D. Lee and C. N. Yang, “Question of parity conservation in weak interactions,” Phys. Rev. 104, 254–258 (1956).
C. S. Wu, et al., “Experimental test of parity conservation in beta decay,” Phys. Rev. 105, 1413–1415 (1957).
J. H. Christenson, et al., “Evidence for the 2π decay of the K 02 meson,” Phys. Rev. Lett. 13, 138–140 (1964).
S. M. Barr, “A review of CP violation in atoms,” Int. J. Mod. Phys. 8, 209–236 (1993).
I. Bigi, N. G. Ural’tsev, “Effective gluon operators and the dipole moment of the neutron,” Zh. Eksp. Teor. Fiz. 100, 363–385 (1991).
J. Baron, et al., “Order of magnitude smaller limit on the electric dipole moment of the electron,” Science 343, 269–272 (2014).
M. J. Ramsey-Musolf, “Future directions with nucleons, nuclei, and atoms,” in Proceedings of the Workshop “Fundamental Physics at the Intensity Frontier,” Rockville, MD, Nov. 30–Dec.2, 2011. https://twindico.hep.anl.gov/indico/getFile.py/access?contribId=28&ses-sionId=5&resId=0&materialId=slides&confId=648.
M. Pospelov and A. Ritz, “Electric dipole moments as probes of new physics,” Ann. Phys. (New York) 318, 119–169 (2005).
J. H. Smith, E. M. Purcell, and N. F. Ramsey, “Experimental limit to the electric dipole moment of the neutron,” Phys. Rev. 108, 120–122 (1957).
W. B. Dress, et al., “Search for an electric dipole moment of the neutron,” Phys. Rev. D: Part. Fields 15, 9–21 (1977).
C. G. Shull and R. Nathans, “Search for a neutron electric dipole moment by a scattering experiment,” Phys. Rev. Lett. 19, 384–386 (1967).
V. L. Alekseev, et al., “Measurement of the strong intracrystalline electric field in the Schwinger interaction with diffracted neutrons,” J. Exp. Theor. Phys. 69, 1083–1085 (1989).
V. V. Fedorov, V. V. Voronin, and E. G. Lapin, “On the search for neutron EDM using Laue diffraction by a crystal without a centre of symmetry,” J. Phys. G: Nucl. Part. Phys. 18, 1133–1148 (1992).
V. V. Fedorov, et al., “Measurement of the neutron electric dipole moment via spin rotation in a non-centrosymmetric crystal,” Phys. Lett. B 694, 22–25 (2010).
Ya. B. Zel’dovich, “Storage of cold neutrons,” Zh. Eksp. Teor. Fiz. 36, 1952–1953 (1959).
F. L. Shapiro, “Electric dipole moments of elementary particles,” Usp. Fiz. Nauk 95, 145–158 (1968).
I. S. Altarev, et al., “A search for the electric dipole moment of the neutron using ultracold neutrons,” Nucl. Phys. A 341, 269–283 (1980).
I. S. Altarev, et al., “A new upper limit on the electric dipole moment of the neutron,” Phys. Lett. B 102, 13–16 (1981).
J. M. Pendlebury, et al., “Search for a neutron electric dipole moment,” Phys. Lett. 136, 327–330 (1984).
K. F. Smith, et al., “A search for the electric dipole moment of the neutron,” Phys. Lett. B 234, 191–196 (1990).
I. S. Altarev, et al., “New measurement of the electric dipole moment of the neutron,” Phys. Lett. B 276, 242–246 (1992).
I. S. Altarev, et al., “Search for the neutron electric dipole moment,” Phys. At. Nucl. 59, 1152 (1996).
P. G. Harris, et al., “New experimental limit on the electric dipole moment of the neutron,” Phys. Rev. Lett. 82, 904–907 (1999).
C. A. Baker, et al., “Improved experimental limit on the electric dipole moment of the neutron,” Phys. Rev. Lett. 97, 131801 (2006).
J. M. Pendlebury, et al., “Geometric-phase-induced false electric dipole moment signals for particles in traps,” Phys. Rev. A: Gen. Phys. 70, 032102 (2004).
A. Steyerl, et al., “A new source of cold and ultracold neutrons,” Phys. Lett. A 116, 347–352 (1986).
I. S. Altarev, et al., “Search for an electric dipole moment of the neutron,” Pis’ma Zh. Eksp. Teor. Fiz. 44, 360–363 (1986).
A. P. Serebrov, et al., “The project of ultracold neutron sources at the PIK reactor with superfluid helium as a moderator,” Tech. Phys. Lett. 40(1), 10 (2014).
A. P. Serebrov, et al., “Preparation of facilities for fundamental research with ultracold neutrons at PNPI,” Nucl. Instrum. Methods Phys. Res., Sect. A 611, 276–279 (2009).
N. F. Ramsey, Molecular Beams (Oxford Univ. Press, New York, 1956).
Yu. V. Borisov and S. N. Ivanov, USSR Inventor’s Certificate no. 919477; Byull. Izobret., No. 30 (1983).
I. S. Altarev, et al., “Method for stabilization of a magneto-resonance spectrometer,” Preprint No. 1117, LIYaF (Leningrad Inst. of Nuclear Physics, Gatchina, 1985).
Yu. V. Borisov, et al., “Fast multichannel stabilization of the magnetic resonance in a magneto-resonance spectrometer,” Nucl. Instrum. Methods Phys. Res., Sect. A 357, 115–119 (1995).
V. A. Solovei, et al., “Hardware for pre-processing and precision measurement of sinusoidal signals frequencies,” Preprint No.2565, PIYaF (St. Petersburg Inst. of Nuclear Physics, Gatchina, 2004).
E. B. Aleksandrov, et al., “Testing a prototype of the neutron magnetic resonance stabilization system,” Tech. Phys. Lett. 33(1), 1–3 (2007).
A. P. Serebrov, et al., “Ultracold-neutron infrastructure for the PNPI/ILL neutron EDM experiment,” Nucl. Instrum. Methods Phys. Res., Sect. A 611, 263–266 (2009).
A. P. Serebrov, et al., “New measurements of the neutron electric dipole moment,” JETP Lett. 99(1), 4–8 (2014).
O. Zimmer, F. M. Piegsa, and S. Ivanov, “Superthermal source of ultracold neutrons for fundamental physics experiments,” Phys. Rev. Lett. 107, 134801 (2011).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.P. Serebrov, E.A. Kolomenskiy, A.N. Pirozhkov, I.A. Krasnoshekova, A.V. Vasiliev, A.O. Polyushkin, M.S. Lasakov, A.N. Murashkin, V.A. Solovey, A.K. Fomin, I.V. Shoka, O.M. Zherebtsov, P. Geltenbort, S.N. Ivanov, O. Zimmer, E.B. Alexandrov, S.P. Dmitriev, N.A. Dovator, 2015, published in Pis’ma v Zhurnal Fizika Elementarnykh Chastits i Atomnogo Yadra, 2015.
To the memory of Academician V.M. Lobashev on the 80th anniversary of his birth
Rights and permissions
About this article
Cite this article
Serebrov, A.P., Kolomenskiy, E.A., Pirozhkov, A.N. et al. New measurements of the neutron electric dipole moment with the Petersburg Nuclear Physics Institute double-chamber electric dipole moment spectrometer. Phys. Part. Nuclei Lett. 12, 286–296 (2015). https://doi.org/10.1134/S1547477115020193
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1547477115020193