Measurement of the permanent electric dipole moment of the 129Xe atom

被引：42

作者：

Allmendinger, F. ^{[1
]}

Engin, I ^{[2
]}

Heil, W. ^{[3
]}

Karpuk, S. ^{[3
]}

Krause, H-J ^{[4
]}

Niederlaender, B. ^{[3
]}

Offenhaeusser, A. ^{[4
]}

Repetto, M. ^{[3
]}

Schmidt, U. ^{[1
]}

Zimmer, S. ^{[1
]}

机构：

[1] Ruprecht Karls Univ Heidelberg, Phys Inst, D-69120 Heidelberg, Germany

[2] Forschungszentrum Julich, PGI 6, D-52425 Julich, Germany

[3] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[4] Forschungszentrum Julich, ICS 8, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW A | 2019年 / 100卷 / 02期

关键词：

SPIN-POLARIZED HE-3; MAGNETIC-RESONANCE; FIELD; RELAXATION; PHASE;

D O I：

10.1103/PhysRevA.100.022505

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a measurement of the CP-violating permanent electric dipole moment (EDM) of the neutral Xe-129 atom. Our experimental approach is based on the detection of the free precession of co-located nuclear spin-polarized He-3 and Xe-129 samples. The EDM measurement sensitivity benefits strongly from long spin coherence times of several hours achieved in diluted gases and homogeneous weak magnetic fields of about 400 nT. A finite EDM is indicated by a change in the precession frequency, as an electric field is periodically reversed with respect to the magnetic guiding field. Our result (-4.7 +/- 6.4) x 10(-28)e cm, is consistent with zero and is used to place a new upper limit on the Xe-129 EDM: vertical bar d(Xe)vertical bar < 1.5 x 10(-27) e cm (95% C.L.). We also discuss the implications of this result for various CP-violating observables as they relate to theories of physics beyond the standard model.

引用

页数：19

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