Search for the electric dipole moment of the electron with thorium monoxide

被引：120

作者：

Vutha, A. C. ^{[1
]}

Campbell, W. C. ^{[2
,3
]}

Gurevich, Y. V. ^{[4
]}

Hutzler, N. R. ^{[4
]}

Parsons, M. ^{[4
]}

Patterson, D. ^{[4
]}

Petrik, E. ^{[4
]}

Spaun, B. ^{[4
]}

Doyle, J. M. ^{[4
]}

Gabrielse, G. ^{[4
]}

DeMille, D. ^{[1
]}

机构：

[1] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[2] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA

[3] NIST, New Haven, CT 06520 USA

[4] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 07期

基金：

美国国家科学基金会;

关键词：

STATE;

D O I：

10.1088/0953-4075/43/7/074007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The electric dipole moment of the electron (eEDM) is a signature of CP-violating physics beyond the standard model. We describe an ongoing experiment to measure or set improved limits to the eEDM, using a cold beam of thorium monoxide (ThO) molecules. The metastable H (3)Delta(1) state in ThO has important advantages for such an experiment. We argue that the statistical uncertainty of an eEDM measurement could be improved by as much as three orders of magnitude compared to the current experimental limit, in a first-generation apparatus using a cold ThO beam. We describe our measurements of the H state lifetime and the production of ThO molecules in a beam, which provide crucial data for the eEDM sensitivity estimate. ThO also has ideal properties for the rejection of a number of known systematic errors; these properties and their implications are described.

引用

页数：9

共 35 条

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