Measuring the electric dipole moment of the electron in BaF

被引：98

作者：

Aggarwal, Parul ^{[1
,2
]}

Bethlem, Hendrick L. ^{[3
]}

Borschevsky, Anastasia ^{[1
,2
]}

Denis, Malika ^{[1
,2
]}

Esajas, Kevin ^{[1
,2
]}

Haase, Pi A. B. ^{[1
,2
]}

Hao, Yongliang ^{[1
,2
]}

Hoekstra, Steven ^{[1
,2
]}

Jungmann, Klaus ^{[1
,2
]}

Meijknecht, Thomas B. ^{[1
,2
]}

Mooij, Maarten C. ^{[2
,3
]}

Timmermans, Rob G. E. ^{[1
,2
]}

Ubachs, Wim ^{[3
]}

Willmann, Lorenz ^{[1
,2
]}

Zapara, Artem ^{[1
,2
]}

机构：

[1] Univ Groningen, Van Swinderen Inst Particle Phys & Grav VSI, Groningen, Netherlands

[2] Natl Inst Subat Phys, Nikhef, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands

[3] Vrije Univ, LaserLaB, Dept Phys & Astron, De Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands

来源：

EUROPEAN PHYSICAL JOURNAL D | 2018年 / 72卷 / 11期

关键词：

Molecular Physics and Chemical Physics; LASER-INDUCED FLUORESCENCE; LIFETIME MEASUREMENTS; CRYOGENIC BEAM; MOLECULES; STATES; ATOMS; DECELERATION; CONSTANTS; XE-129; COLD;

D O I：

10.1140/epjd/e2018-90192-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the merits of a measurement of the permanent electric dipole moment of the electron (eEDM) with barium monofluoride molecules, thereby searching for phenomena of CP violation beyond those incorporated in the standard model (SM) of particle physics. Although the BaF molecule has a smaller enhancement factor in terms of the effective electric field than other molecules used in current studies (YbF, ThO and ThF+), we show that a competitive measurement is possible by combining Stark-deceleration, laser-cooling and an intense primary cold source of BaF molecules. With the long coherent interaction times obtainable in a cold beam of BaF, a sensitivity of 5 x 10(-30) ecm for an eEDM is feasible. We describe the rationale, the challenges and the experimental methods envisioned to achieve this target.

引用

页数：10

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