Buchumschlag

New limit on Lorentz-invariance- and CPT-violating neutron spin interactions using a free-spin-precession 3He-129Xe Comagnetometer

We report on the search for a CPT- and Lorentz-invariance-violating coupling of the 3He and 129Xe nuclear spins (each largely determined by a valence neutron) to posited background tensor fields that permeate the Universe. Our experimental approach is to measure the free precession of nuclear spin p...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Allmendinger, Fabian (VerfasserIn) , Heil, W. (VerfasserIn) , Karpuk, S. (VerfasserIn) , Kilian, W. (VerfasserIn) , Scharth, A. (VerfasserIn) , Schmidt, Ulrich (VerfasserIn) , Schnabel, A. (VerfasserIn) , Sobolev, Yu. (VerfasserIn) , Tullney, K. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 17 March 2014
In: Physical review letters
Year: 2014, Jahrgang: 112, Heft: 11
ISSN:1079-7114
DOI:10.1103/PhysRevLett.112.110801
Online-Zugang:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.112.110801
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.112.110801
Volltext
Verfasserangaben:F. Allmendinger, W. Heil, S. Karpuk, W. Kilian, A. Scharth, U. Schmidt, A. Schnabel, Yu. Sobolev, and K. Tullney
Beschreibung
Zusammenfassung:We report on the search for a CPT- and Lorentz-invariance-violating coupling of the 3He and 129Xe nuclear spins (each largely determined by a valence neutron) to posited background tensor fields that permeate the Universe. Our experimental approach is to measure the free precession of nuclear spin polarized 3He and 129Xe atoms in a homogeneous magnetic guiding field of about 400 nT using LTC SQUIDs as low-noise magnetic flux detectors. As the laboratory reference frame rotates with respect to distant stars, we look for a sidereal modulation of the Larmor frequencies of the colocated spin samples. As a result we obtain an upper limit on the equatorial component of the background field interacting with the spin of the bound neutron ˜bn⊥<8.4×10−34 GeV (68% C.L.). Our result improves our previous limit (data measured in 2009) by a factor of 30 and the world’s best limit by a factor of 4.
Beschreibung:Im Titel sind die Zahlen 3 und 129 hochgestellt
Gesehen am 09.09.2020
Beschreibung:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.112.110801

Ähnliche Einträge