Q_EC values of the Superallowed beta Emitters 50Mn and 54Co

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dc.creatorEronen, T.
dc.creatorElomaa, V. -V.
dc.creatorHager, U.
dc.creatorHakala, J.
dc.creatorHardy, J. C.
dc.creatorJokinen, A.
dc.creatorKankainen, A.
dc.creatorMoore, I. D.
dc.creatorPenttila, H.
dc.creatorRahaman, S.
dc.creatorRinta-Antila, S.
dc.creatorRissanen, J.
dc.creatorSaastamoinen, A.
dc.creatorSonoda, T.
dc.creatorWeber, C.
dc.creatorAysto, J.
dc.date2007-12-20
dc.date.accessioned2026-07-07T11:39:35Z
dc.date.available2026-07-07T11:39:35Z
dc.descriptionUsing a new fast cleaning procedure to prepare isomerically pure ion samples, we have measured the beta-decay Q_EC values of the superallowed beta-emitters 50Mn and 54Co to be 7634.48(7) keV and 8244.54(10) keV, respectively, results which differ significantly from the previously accepted values. The corrected Ft values derived from our results strongly support new isospin-symmetry-breaking corrections that lead to a higher value of the up-down quark mixing element, Vud, and improved confirmation of the unitarity of the Cabibbo-Kobayashi-Maskawa matrix.
dc.description4 pages, 5 figures, 1 table, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0712.3463
dc.identifierhttp://arxiv.org/abs/0712.3463
dc.identifierPhys.Rev.Lett.100:132502,2008; Erratum-ibid.100:149902,2008
dc.identifierdoi:10.1103/PhysRevLett.100.132502 10.1103/PhysRevLett.100.149902
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199969
dc.subjectNuclear Experiment
dc.titleQ_EC values of the Superallowed beta Emitters 50Mn and 54Co
dc.typetext

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