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  High-precision atomic mass measurements for a CKM unitarity test

Eronen, T., & Jokinen, A. (2013). High-precision atomic mass measurements for a CKM unitarity test. International Journal of Mass Spectrometry, 349-350, 69-73. doi:10.1016/j.ijms.2013.03.003.

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 Urheber:
Eronen, Tommi1, 2, Autor           
Jokinen, Ari2, Autor
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
2University of Jyväskylä, Finland / Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä, Finland, ou_persistent22              

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 Zusammenfassung: The Cabibbo–Kobayashi–Maskawa (CKM) quark-mixing matrix describes the transformation of quarks from weak-force eigenstates to mass eigenstates. The most contributing element in this matrix is the up-down matrix element Vud, derived in most precise way from the nuclear beta decays and in particular, from decays having superallowed 0+ → 0+ decay branch. What high-precision mass spectrometry community can offer are decay energies of such decays derived from parent–daughter mass differences, which are ideally, and in almost all cases, determined with Penning trap mass spectrometry directly from parent–daughter cyclotron frequency ratio. Typically frequency (and thus mass) ratios are determined with 10−9 relative precision, which allows decay energies to be determined within 100 eV-level. The Cabibbo–Kobayashi–Maskawa (CKM) quark-mixing matrix describes the transformation of quarks from weak-force eigenstates to mass eigenstates. The most contributing element in this matrix is the up-down matrix element Vud, derived in most precise way from the nuclear beta decays and in particular, from decays having superallowed 0+ → 0+ decay branch. What high-precision mass spectrometry community can offer are decay energies of such decays derived from parent–daughter mass differences, which are ideally, and in almost all cases, determined with Penning trap mass spectrometry directly from parent–daughter cyclotron frequency ratio. Typically frequency (and thus mass) ratios are determined with 10−9 relative precision, which allows decay energies to be determined within 100 eV-level.

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Sprache(n): eng - English
 Datum: 2013-03-26
 Publikationsstatus: Online veröffentlicht
 Seiten: 5
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.ijms.2013.03.003
 Art des Abschluß: -

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Titel: International Journal of Mass Spectrometry
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: - Band / Heft: 349-350 Artikelnummer: - Start- / Endseite: 69 - 73 Identifikator: ISSN: 1387-3806
CoNE: https://pure.mpg.de/cone/journals/resource/954926232412