A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Direct determination of the atomic mass difference of the pairs 76As−76Se and 155Tb−155Gd rules out 76As and 155 Tb as possible candidates for electron (anti)neutrino mass measurements (2022)


Ge, Z., Eronen, T., de Roubin, A., Kostensalo, J., Suhonen, J., Nesterenko, D. A., Beliuskina, O., de Groote, R., Delafosse, C., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Kankainen, A., Kotila, J., Koszorús, Á., Moore, I. D., Raggio, A., Rinta-Antila, S., . . . Zadvornaya, A. (2022). Direct determination of the atomic mass difference of the pairs 76As−76Se and 155Tb−155Gd rules out 76As and 155 Tb as possible candidates for electron (anti)neutrino mass measurements. Physical Review C, 106(1), Article 015502. https://doi.org/10.1103/PhysRevC.106.015502


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatGe, Z.; Eronen, T.; de Roubin, A.; Kostensalo, J.; Suhonen, J.; Nesterenko, D. A.; Beliuskina, O.; de Groote, R.; Delafosse, C.; Geldhof, S.; et al.

Lehti tai sarjaPhysical Review C

ISSN2469-9985

eISSN2469-9993

Julkaisuvuosi2022

Ilmestymispäivä13.07.2022

Volyymi106

Lehden numero1

Artikkelinumero015502

KustantajaAmerican Physical Society (APS)

JulkaisumaaYhdysvallat (USA)

Julkaisun kielienglanti

DOIhttps://doi.org/10.1103/PhysRevC.106.015502

Julkaisun avoin saatavuusEi avoin

Julkaisukanavan avoin saatavuus

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/82818

Rinnakkaistallenteen verkko-osoite (pre-print)https://arxiv.org/abs/2202.07656


Tiivistelmä

The first direct determination of the ground-state–to–ground-state Q values of the β− decay 76As→76Se and the electron-capture decay 155Tb→155Gd was performed utilizing the double Penning trap mass spectrometer JYFLTRAP. By measuring the atomic mass difference of the decay pairs via the phase-imaging ion-cyclotron-resonance technique, the Q values of 76As→76Se and 155Tb→155Gd were determined to be 2959.265(74) keV and 814.94(18) keV, respectively. The precision was increased relative to earlier measurements by factors of 12 and 57, respectively. The new Q values are 1.33 keV and 5 keV lower compared to the values adopted in the most recent Atomic Mass Evaluation 2020. With the newly determined ground-state–to–ground-state Q values combined with the excitation energy from γ-ray spectroscopy, the Q values for ground-state–to–excited-state transitions 76As (ground state) →76Se∗ (2968.4(7) keV) and 155Tb (ground state) →155Gd∗ (815.731(3) keV) were derived to be −9.13(70) keV and −0.79(18) keV. Thus we have confirmed that both of the β−-decay and EC-decay candidate transitions are energetically forbidden at a level of at least 4σ, thus definitely excluding these two cases from the list of potential candidates for the search of low-Q-value β− or EC decays to determine the electron-(anti)neutrino mass.


YSO-asiasanatydinfysiikkahiukkasfysiikkaneutriinot


Liittyvät organisaatiot


Hankkeet, joissa julkaisu on tehty


OKM-raportointiKyllä

Raportointivuosi2022

JUFO-taso2


Viimeisin päivitys 2024-03-04 klo 18:56