Zeeman interaction in ThO H 3𝜟1 for the electron electric-dipole-moment search

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Zeeman interaction in ThO H 3𝜟1 for the electron electric-dipole-moment search

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Title: Zeeman interaction in ThO H 3𝜟1 for the electron electric-dipole-moment search
Author: Petrov, A. N.; Skripnikov, L. V.; Titov, A. V.; Hutzler, Nicholas Richard; Hess, P. W.; O'Leary, Brendon; Spaun, B.; DeMille, D.; Gabrielse, Gerald; Doyle, John M.

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Citation: Petrov, A. N., L. V. Skripnikov, A. V. Titov, N. R. Hutzler, P. W. Hess, B. R. O’Leary, B. Spaun, D. DeMille, G. Gabrielse, and J. M. Doyle. 2014. Zeeman Interaction in ThO H3𝜟1for the Electron Electric-Dipole-Moment Search. Physical Review A 89 (6). doi:10.1103/physreva.89.062505.
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Abstract: The current limit on the electron’s electric dipole moment, |de| < 8.7 × 10−29 e cm (90% confidence), was set using the molecule thorium monoxide (ThO) in the J = 1 rotational level of its H 3𝜟1 electronic state [J. Baron et al., Science 343, 269 (2014)]. This state in ThO is very robust against systematic errors related to magnetic fields or geometric phases, due in part to its -doublet structure. These systematics can be further suppressed by operating the experiment under conditions where the g-factor difference between the doublets is minimized. We consider the g factors of the ThO H 3𝜟1 state both experimentally and theoretically, including dependence on doublets, the rotational level, and the external electric field. The calculated and measured values are in good agreement. We find that the g-factor difference between doublets is smaller in J = 2 than in J = 1 and reaches zero at an experimentally accessible electric field. This means that the H,J = 2 state should be even more robust against a number of systematic errors compared to H,J = 1.
Published Version: doi:10.1103/PhysRevA.89.062505
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Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27885358
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