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Title: Magnetic and electric dipole moments of the H {sup 3}{Delta}{sub 1} state in ThO

Abstract

The metastable H {sup 3}{Delta}{sub 1} state in the thorium monoxide (ThO) molecule is highly sensitive to the presence of a CP-violating permanent electric dipole moment of the electron (eEDM) [E. R. Meyer and J. L. Bohn, Phys. Rev. A 78, 010502 (2008)]. The magnetic dipole moment {mu}{sub H} and the molecule-fixed electric dipole moment D{sub H} of this state are measured in preparation for a search for the eEDM. The small magnetic moment {mu}{sub H}=8.5(5)x10{sup -3} {mu}{sub B} displays the predicted cancellation of spin and orbital contributions in a {sup 3}{Delta}{sub 1} paramagnetic molecular state, providing a significant advantage for the suppression of magnetic field noise and related systematic effects in the eEDM search. In addition, the induced electric dipole moment is shown to be fully saturated in very modest electric fields (<10 V/cm). This feature is favorable for the suppression of many other potential systematic errors in the ThO eEDM search experiment.

Authors:
; ;  [1]; ; ; ; ;  [2]
  1. Department of Physics, Yale University, New Haven, Connecticut 06520 (United States)
  2. Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
Publication Date:
OSTI Identifier:
22072230
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CP INVARIANCE; ELECTRIC DIPOLE MOMENTS; ELECTRIC FIELDS; ELECTRONS; MAGNETIC DIPOLE MOMENTS; MAGNETIC FIELDS; MOLECULES; PARAMAGNETISM; SPIN; THORIUM

Citation Formats

Vutha, A. C., Kirilov, E., DeMille, D., Spaun, B., Gurevich, Y. V., Hutzler, N. R., Doyle, J. M., and Gabrielse, G. Magnetic and electric dipole moments of the H {sup 3}{Delta}{sub 1} state in ThO. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.034502.
Vutha, A. C., Kirilov, E., DeMille, D., Spaun, B., Gurevich, Y. V., Hutzler, N. R., Doyle, J. M., & Gabrielse, G. Magnetic and electric dipole moments of the H {sup 3}{Delta}{sub 1} state in ThO. United States. doi:10.1103/PHYSREVA.84.034502.
Vutha, A. C., Kirilov, E., DeMille, D., Spaun, B., Gurevich, Y. V., Hutzler, N. R., Doyle, J. M., and Gabrielse, G. Thu . "Magnetic and electric dipole moments of the H {sup 3}{Delta}{sub 1} state in ThO". United States. doi:10.1103/PHYSREVA.84.034502.
@article{osti_22072230,
title = {Magnetic and electric dipole moments of the H {sup 3}{Delta}{sub 1} state in ThO},
author = {Vutha, A. C. and Kirilov, E. and DeMille, D. and Spaun, B. and Gurevich, Y. V. and Hutzler, N. R. and Doyle, J. M. and Gabrielse, G.},
abstractNote = {The metastable H {sup 3}{Delta}{sub 1} state in the thorium monoxide (ThO) molecule is highly sensitive to the presence of a CP-violating permanent electric dipole moment of the electron (eEDM) [E. R. Meyer and J. L. Bohn, Phys. Rev. A 78, 010502 (2008)]. The magnetic dipole moment {mu}{sub H} and the molecule-fixed electric dipole moment D{sub H} of this state are measured in preparation for a search for the eEDM. The small magnetic moment {mu}{sub H}=8.5(5)x10{sup -3} {mu}{sub B} displays the predicted cancellation of spin and orbital contributions in a {sup 3}{Delta}{sub 1} paramagnetic molecular state, providing a significant advantage for the suppression of magnetic field noise and related systematic effects in the eEDM search. In addition, the induced electric dipole moment is shown to be fully saturated in very modest electric fields (<10 V/cm). This feature is favorable for the suppression of many other potential systematic errors in the ThO eEDM search experiment.},
doi = {10.1103/PHYSREVA.84.034502},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}