A1 Journal article (refereed)
High-precision Q-value measurement and nuclear matrix element calculations for the double-β decay of 98Mo (2022)

Nesterenko, D. A., Jokiniemi, L., Kotila, J., Kankainen, A., Ge, Z., Eronen, T., Rinta-Antila, S., & Suhonen, J. (2022). High-precision Q-value measurement and nuclear matrix element calculations for the double-β decay of 98Mo. European Physical Journal A, 58(3), Article 44. https://doi.org/10.1140/epja/s10050-022-00695-w

JYU authors or editors

Publication details

All authors or editors: Nesterenko, D. A.; Jokiniemi, L.; Kotila, J.; Kankainen, A.; Ge, Z.; Eronen, T.; Rinta-Antila, S.; Suhonen, J.

Journal or series: European Physical Journal A

ISSN: 1434-6001

eISSN: 1434-601X

Publication year: 2022

Publication date: 14/03/2022

Volume: 58

Issue number: 3

Article number: 44

Publisher: Springer Science and Business Media LLC

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1140/epja/s10050-022-00695-w

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/81269

Abstract

The 98Mo double-beta decay Q-value has been measured, and the corresponding nuclear matrix elements of neutrinoless double-beta (0νββ) decay and the standard two-neutrino double-beta (2νββ) decay have been provided by nuclear theory. The double-beta decay Q-value has been determined as Qββ=113.668(68) keV using the JYFLTRAP Penning trap mass spectrometer. It is in agreement with the literature value, Qββ=109(6) keV, but almost 90 times more precise. Based on the measured Q-value, precise phase-space factors for 2νββ decay and 0νββ decay, needed in the half-life predictions, have been calculated. Furthermore, the involved nuclear matrix elements have been computed in the proton–neutron quasiparticle random-phase approximation (pnQRPA) and the microscopic interacting boson model (IBM-2) frameworks. Finally, predictions for the 2νββ decay are given, suggesting a much longer half-life than for the currently observed cases.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 1