Limit on Lorentz-invariance- and CPT-violating neutron spin interactions using a 3He-129Xe comagnetometer

• Verfasst von: Allmendinger, Fabian [VerfasserIn]
• Verfasst von: Schmidt, Ulrich [VerfasserIn]
• Verfasst von: Heil, W. [VerfasserIn]
• Verfasst von: Karpuk, S. [VerfasserIn]
• Verfasst von: Sobolev, Yu. [VerfasserIn]
• Verfasst von: Tullney, K. [VerfasserIn]
• Titel: Limit on Lorentz-invariance- and CPT-violating neutron spin interactions using a 3He-129Xe comagnetometer
• Verf.angabe: F. Allmendinger, U. Schmidt, W. Heil, S. Karpuk, Yu. Sobolev and K. Tullney
• E-Jahr: 2016
• Jahr: Jul 22, 2016
• Umfang: 4 S.
• Fussnoten: Part of Proceedings, 7th Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, USA, June 20-24, 2016 ; Im Titel sind die Zahlen "3" und "129" hochgestellt ; Gesehen am 13.08.2020
• Titel Quelle: Enthalten in: International journal of modern physics / Conference series
• Ort Quelle: Singapore [u.a.] : World Scientific, 2011
• Jahr Quelle: 2016
• Band/Heft Quelle: 40(2016) Artikel-Nummer 1660082, 4 Seiten
• ISSN Quelle: 2010-1945
• DOI: doi:10.1142/S201019451660082X
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1727005058

Abstract

We performed a search for a Lorentz-invariance- and CPT-violating coupling of the 3He and 129129<math display="inline" overflow="scroll" altimg="eq-00003.gif"><msup><mrow></mrow><mrow><mn>1</mn><mn>2</mn><mn>9</mn></mrow></msup></math>Xe nuclear spins to posited background fields. Our experimental approach is to measure the free precession of nuclear spin polarized 3He and 129129<math display="inline" overflow="scroll" altimg="eq-00004.gif"><msup><mrow></mrow><mrow><mn>1</mn><mn>2</mn><mn>9</mn></mrow></msup></math>Xe atoms using SQUIDs as detectors. As the laboratory reference frame rotates with respect to distant stars, we look for a sidereal modulation of the Larmor frequencies of the co-located spin samples. As a result we obtain an upper limit on the equatorial component of the background field b˜n⊥<8.4⋅10−34b̃⊥n<8.4⋅10−34<math display="inline" overflow="scroll" altimg="eq-00005.gif"><msubsup><mrow><mover accent="true"><mrow><mi>b</mi></mrow><mo class="MathClass-op">̃</mo></mover></mrow><mrow><mo class="MathClass-rel">⊥</mo></mrow><mrow><mi>n</mi></mrow></msubsup><mo class="MathClass-rel"><</mo><mn>8</mn><mo class="MathClass-punc">.</mo><mn>4</mn><mo stretchy="false" class="MathClass-bin">⋅</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo stretchy="false" class="MathClass-bin">−</mo><mn>3</mn><mn>4</mn></mrow></msup></math> GeV (68% C.L.). This experiment is currently the most precise test of spin anisotropy due to the excellent long spin-coherence time.