High-Precision Q-Value Measurement Confirms the Potential of 135Cs for Absolute Antineutrino Mass Scale Determination
Abstract
The ground-state-to-ground-state β-decay Q value of 135Cs(7/2+)→135Ba(3/2+) has been directly measured for the first time. The measurement was done utilizing both the phase-imaging ion-cyclotron resonance technique and the time-of-flight ion-cyclotron resonance technique at the JYFLTRAP Penning-trap setup and yielded a mass difference of 268.66(30) keV between 135Cs(7/2+) and 135Ba(3/2+). With this very small uncertainty, this measurement is a factor of 3 more precise than the currently adopted Q value in the Atomic Mass Evaluation 2016. The measurement confirms that the first-forbidden unique β—decay transition 135Cs(7/2+)→135Ba(11/2−) is a candidate for antineutrino mass measurements with an ultralow Q value of 0.44(31) keV. This Q value is almost an order of magnitude smaller than those of nuclides presently used in running or planned direct (anti)neutrino mass experiment.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202006174245Use this for linking
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.124.222503
Language
English
Published in
Physical Review Letters
Citation
- de Roubin, A., Kostensalo, J., Eronen, T., Canete, L., de Groote, R. P., Jokinen, A., Kankainen, A., Nesterenko, D. A., Moore, I. D., Rinta-Antila, S., Suhonen, J., & Vilén, M. (2020). High-Precision Q-Value Measurement Confirms the Potential of 135Cs for Absolute Antineutrino Mass Scale Determination. Physical Review Letters, 124(22), Article 222503. https://doi.org/10.1103/PhysRevLett.124.222503
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Funder(s)
Research Council of Finland
Research Council of Finland
Research Council of Finland
Research Council of Finland
European Commission
Research Council of Finland
Funding program(s)
Academy Research Fellow, AoF
Research costs of Academy Research Fellow, AoF
Academy Research Fellow, AoF
Research costs of Academy Research Fellow, AoF
ERC Consolidator Grant
Research costs of Academy Research Fellow, AoF
Akatemiatutkija, SA
Akatemiatutkijan tutkimuskulut, SA
Akatemiatutkija, SA
Akatemiatutkijan tutkimuskulut, SA
ERC Consolidator Grant
Akatemiatutkijan tutkimuskulut, SA
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
This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012–2017 (Nuclear and Accelerator Based Physics Research at JYFL) and Projects No. 306980, No. 312544, No. 275389, No. 284516, and No. 295207. This work was supported by the EU Horizon 2020 research and innovation program under Grant No. 771036 (ERC CoG MAIDEN).
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