Nuclear Charge Radius of 26mAl and Its Implication for Vud in the Quark Mixing Matrix
Abstract
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope 26mAl. The measured isotope shift to 27Al in the 3s23p 2P○3/2→3s24s 2S1/2 atomic transition enabled the first experimental determination of the nuclear charge radius of 26mAl, resulting in Rc=3.130(15) fm. This differs by 4.5 standard deviations from the extrapolated value used to calculate the isospin-symmetry breaking corrections in the superallowed β decay of 26mAl. Its corrected Ft value, important for the estimation of Vud in the Cabibbo-Kobayashi-Maskawa matrix, is thus shifted by 1 standard deviation to 3071.4(1.0) s.
Main Authors
Format
Articles
Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Physical Society (APS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202311298143Use this for linking
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.131.222502
Language
English
Published in
Physical Review Letters
Citation
- Plattner, P., Wood, E., Al Ayoubi, L., Beliuskina, O., Bissell, M. L., Blaum, K., Campbell, P., Cheal, B., de Groote, R. P., Devlin, C. S., Eronen, T., Filippin, L., Garcia Ruiz, R. F., Ge, Z., Geldhof, S., Gins, W., Godefroid, M., Heylen, H., Hukkanen, M., . . . Yordanov, D. T. (2023). Nuclear Charge Radius of 26mAl and Its Implication for Vud in the Quark Mixing Matrix. Physical Review Letters, 131(22), Article 222502. https://doi.org/10.1103/PhysRevLett.131.222502
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Funder(s)
European Commission
European Commission
European Commission
Funding program(s)
MSCA Innovative Training Networks (ITN)
Research infrastructures, H2020
ERC Consolidator Grant
MSCA Innovative Training Networks (ITN)
Research infrastructures, H2020
ERC Consolidator Grant
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Education and Culture Executive Agency (EACEA). Neither the European Union nor EACEA can be held responsible for them.
Additional information about funding
We acknowledge funding from the Federal Ministry of Education and Research under Contracts No. 05P15RDCIA and No. 05P21RDCI1 and the Max-Planck Society, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project-ID 279384907—SFB 1245, the Helmholtz International Center for FAIR (HICfor FAIR), and the EU Horizon 2020 research and innovation programme through ENSAR2 (Grant No. 654002), grant agreement No. 771036 (ERC CoG MAIDEN) and Grant Agreement No. 861198-LISA-H2020-MSCA-ITN-2019. We acknowledge the funding provided by the UK Science and Technology Facilities Council (STFC) Grants No. ST/P004598/1 and No. ST/L005794/1. This work was supported by the FWO Vlaanderen and KU Leuven project C14/22/104. TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. A significant share of the research work described herein originates from R&D carried out in the frame of the FAIR Phase-0 program of LASPEC/NUSTAR.
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