Journal Article

FZJ-2019-04196

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Measurement of the permanent electric dipole moment of the Xe 129 atom

Allmendinger, F. (Corresponding author) ; Engin, I.FZJ* ; Heil, W. ; Karpuk, S. ; Krause, H.-J.FZJ* ; Niederländer, B. ; Offenhäusser, A.FZJ* ; Repetto, M. ; Schmidt, U. ; Zimmer, S.

2019
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/22689  doi:10.1103/PhysRevA.100.022505

Abstract: We report on a measurement of theCP-violating permanent electric dipole moment (EDM) of the neutral 129-Xe atom. Our experimental approach is based on the detection of the free precession of co-located nuclear spinpolarized 3He and 129Xe 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) × 10−28e cm, is consistent with zero and is used to place a new upper limit on the 129-Xe EDM: |dXe| < 1.5 × 10−27e 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.

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Contributing Institute(s):

1. Bioelektronik (ICS-8)
2. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. 523 - Controlling Configuration-Based Phenomena (POF3-523) (POF3-523)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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