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Test of Lorentz invariance in beta decay of polarized Na-20

dc.contributor.authorSytema, A.
dc.contributor.authorvan den Berg, J. E.
dc.contributor.authorBoll, O.
dc.contributor.authorChernowitz, D.
dc.contributor.authorDijck, E. A.
dc.contributor.authorGrasdijk, J. O.
dc.contributor.authorHoekstra, S.
dc.contributor.authorJungmann, K.
dc.contributor.authorMathavan, S. C.
dc.contributor.authorMeinema, C.
dc.contributor.authorMohanty, A.
dc.contributor.authorMuller, S. E.
dc.contributor.authorNoordmans, J. P.
dc.contributor.authorPortela, M. Nunez
dc.contributor.authorOnderwater, C. J. G.
dc.contributor.authorPijpker, C.
dc.contributor.authorTimmermans, R. G. E.
dc.contributor.authorVos, K. K.
dc.contributor.authorWillmann, L.
dc.contributor.authorWilschut, H. W.
dc.date.accessioned2017-04-07T15:56:10Z
dc.date.available2017-04-07T15:56:10Z
dc.date.issued2016-08
dc.description.abstractBackground: Lorentz invariance is key in our understanding of nature, yet relatively few experiments have tested Lorentz invariance in weak interactions.Purpose: Our goal is to obtain limits on Lorentz-invariance violation in weak interactions, in particular rotational invariance in beta decay.Method: We search for a dependence of the lifetime of Na-20 nuclei on the nuclear spin direction. Such directional dependence would be evidence for Lorentz-invariance violation in weak interactions. A difference in lifetime between nuclei that are polarized in the east and west direction is searched for. This difference is maximally sensitive to the rotation of the Earth, while the sidereal dependence is free from most systematic errors.Results: The experiment sets a limit of 2 x 10(-4) at 90% C.L. on the amplitude of the sidereal variation of the relative lifetime differences, an improvement by a factor 15 compared to an earlier result.Conclusions: No significant violation of Lorentz invariance is found. The result sets limits on parameters of theories describing Lorentz-invariance violation.
dc.identifier.doi10.1103/PhysRevC.94.025503
dc.identifier.issn2469-9985
dc.identifier.urihttp://hdl.handle.net/10400.1/9338
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAmerican Physical Society
dc.relation.isbasedonWOS:000381489300002
dc.titleTest of Lorentz invariance in beta decay of polarized Na-20
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage25503
oaire.citation.issue2
oaire.citation.startPage25503
oaire.citation.titlePhysical Review C
oaire.citation.volume94
rcaap.rightsopenAccess
rcaap.typearticle

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