Measurement of the neutron electric dipole moment via spin rotation in a non-centrosymmetric crystal

Федоров, В. В.; Jentschel, M.; Кузнецов, И. А.; Lapin, E. G.; Lelièvre‐Berna, E.; Nesvizhevsky, V. V.; Petoukhov, A.; Semenikhin, S. Yu.; Söldner, T.; Воронин, В. В.; Braginetz, Yu.P.

doi:10.1016/j.physletb.2010.09.033

Cited by 35 publications

(13 citation statements)

References 21 publications

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“…The first experiment on CdS was undertaken by Shull and Nathans (1967), who found d n = (2.4 ± 3.9) × 10 −22 e cm. Fedorov et al (2010) carried out an experiment at the ILL cold neutron beam facility PF1B measuring the spin-rotation of monochromatic polarized neutrons incident on a quartz crystal. The effective electric field was estimated to be of order 10 8 V/cm.…”

Section: Possible Edm Experiments At the European Spallation Sourcementioning

confidence: 99%

Electric dipole moments of atoms, molecules, nuclei, and particles

et al. 2019

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A permanent electric dipole moment (EDM) of a particle or system is a separation of charge along its angular-momentum axis and is a direct signal of T-violation and, assuming CPT symmetry, CP violation. For over sixty years EDMs have been studied, first as a signal of a parity-symmetry violation and then as a signal of CP violation that would clarify its role in nature and in theory. Contemporary motivations include the role that CP violation plays in explaining the cosmological matter-antimatter asymmetry and the search for new physics. Experiments on a variety of systems have become ever-more sensitive, but provide only upper limits on EDMs, and theory at several scales is crucial to interpret these limits. Nuclear theory provides connections from Standard-Model and Beyond-Standard-Model physics to the observable EDMs, and atomic and molecular theory reveal how CP-violation is manifest in these systems. EDM results in hadronic systems require that the Standard Model QCD parameter ofθ must be exceptionally small, which could be explained by the existence of axions -also a candidate darkmatter particle. Theoretical results on electroweak baryogenesis show that new physics is needed to explain the dominance of matter in the universe. Experimental and theoretical efforts continue to expand with new ideas and new questions, and this review provides a broad overview of theoretical motivations and interpretations as well as details about experimental techniques, experiments, and prospects. The intent is to provide specifics and context as this exciting field moves forward.

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Section: Possible Edm Experiments At the European Spallation Sourcementioning

confidence: 99%

Electric dipole moments of atoms, molecules, nuclei, and particles

et al. 2019

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“…The 1s shell static structure factor was taken from (48), which also performed an analysis with multiple B. However, the authors set four different B, one for the 1s, 2s, 2p, and bonding electrons, arriving at values of B = {0.531(3), 0.941 (45), 0.283 (12), 0.58 (15)} Å2 for the 1s, 2s, 2p, and bonding electrons, respectively. We elected to use only two B for the following reasons: The static structure factors in (48) empirically account for bonding distortions of the atomic orbitals, but apply the entire correction to the valence electrons.…”

Section: Supplementary Textmentioning

confidence: 99%

Pendellösung Interferometry Probes the Neutron Charge Radius, Lattice Dynamics, and Fifth Forces

Heacock,

Fujiie,

Haun

et al. 2021

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“…VII.E.1) has been employed to determine neutron polarization to 0.1 % accuracy, thus substantially reducing this contribution to the overall uncertainty budget (Mund et al , 2013; Schumann et al , 2008, 2007). An NSF was also used to determine the neutron polarization in a measurement of the neutron electric dipole moment via spin rotation in a non-centrosymmetric crystal (Fedorov et al , 2010). …”

Section: Neutron Spin-filtersmentioning

confidence: 99%

Optically polarizedHe3

et al. 2017

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This article reviews the physics and technology of producing large quantities of highly spin-polarized 3He nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping. Both technical developments and deeper understanding of the physical processes involved have led to substantial improvements in the capabilities of both methods. For SEOP, the use of spectrally narrowed lasers and K-Rb mixtures has substantially increased the achievable polarization and polarizing rate. For MEOP nearly lossless compression allows for rapid production of polarized 3He and operation in high magnetic fields has likewise significantly increased the pressure at which this method can be performed, and revealed new phenomena. Both methods have benefitted from development of storage methods that allow for spin-relaxation times of hundreds of hours, and specialized precision methods for polarimetry. SEOP and MEOP are now widely applied for spin-polarized targets, neutron spin filters, magnetic resonance imaging, and precision measurements.

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Measurement of the neutron electric dipole moment via spin rotation in a non-centrosymmetric crystal

Cited by 35 publications

References 21 publications

Electric dipole moments of atoms, molecules, nuclei, and particles

Electric dipole moments of atoms, molecules, nuclei, and particles

Pendellösung Interferometry Probes the Neutron Charge Radius, Lattice Dynamics, and Fifth Forces

Optically polarizedHe3

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