A1 Journal article (refereed)
High-Precision Q-Value Measurement Confirms the Potential of 135Cs for Absolute Antineutrino Mass Scale Determination (2020)

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), 222503. DOI: 10.1103/PhysRevLett.124.222503

JYU authors or editors

Publication details

All authors or editors: 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.; et al.

Journal or series: Physical Review Letters

ISSN: 0031-9007

eISSN: 1079-7114

Publication year: 2020

Volume: 124

Issue number: 22

Article number: 222503

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevLett.124.222503

Open Access: Publication channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/70028

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.

Keywords: nuclear physics; particle physics; neutrinos

Free keywords: particles and fields; nuclear physics

Contributing organizations

Related projects

Ministry reporting: Yes

Reporting Year: 2020

Preliminary JUFO rating: 3