Direct measurement of the mass difference of $^{72}$As-$^{72}$Ge rules out $^{72}$As as a promising $\beta$-decay candidate to determine the neutrino mass
| dc.contributor.author | GE, Z. | |
| dc.contributor.author | ERONEN, T. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | DE ROUBIN, A. | |
| dc.contributor.author | NESTERENKO, D.A. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | HUKKANEN, M. | |
| dc.contributor.author | BELIUSKINA, O. | |
| dc.contributor.author | DE GROOTE, R. | |
| dc.contributor.author | GELDHOF, S. | |
| dc.contributor.author | GINS, W. | |
| dc.contributor.author | KANKAINEN, A. | |
| dc.contributor.author | KOSZORÚS, Á. | |
| dc.contributor.author | KOTILA, J. | |
| dc.contributor.author | KOSTENSALO, J. | |
| dc.contributor.author | MOORE, I.D. | |
| dc.contributor.author | RAGGIO, A. | |
| dc.contributor.author | RINTA-ANTILA, S. | |
| dc.contributor.author | SUHONEN, J. | |
| dc.contributor.author | VIRTANEN, V. | |
| dc.contributor.author | WEAVER, A.P. | |
| dc.contributor.author | ZADVORNAYA, A. | |
| dc.contributor.author | JOKINEN, A. | |
| dc.date.issued | 2021 | |
| dc.description.abstractEn | We report the first direct determination of the ground-state to ground-state electron-capture Q value for the As72 to Ge72 decay by measuring their atomic mass difference utilizing the double Penning trap mass spectrometer, JYFLTRAP. The Q value was measured to be 4343.596(75) keV, which is more than a fiftyfold improvement in precision compared to the value in the most recent Atomic Mass Evaluation 2020. Furthermore, the new Q value was found to be 12.4(40) keV (3.1 σ) lower. With the significant reduction of the uncertainty of the ground-state to ground-state Q value combined with the level scheme of Ge72 from γ-ray spectroscopy, we confirm that the five potential ultralow Q-value β+ decay or electron capture transitions are energetically forbidden, thus precluding all the transitions as possible candidates for the electron neutrino mass determination. However, the discovery of small negative Q values opens up the possibility to use As72 for the study of virtual β-γ transitions. | |
| dc.language.iso | en | |
| dc.subject.en | Electroweak Interaction | |
| dc.subject.en | Symmetries | |
| dc.subject.en | neutrino: mass | |
| dc.subject.en | mass: spectrometer | |
| dc.subject.en | electron: capture | |
| dc.subject.en | energy: ground state | |
| dc.subject.en | nuclide: mass difference | |
| dc.subject.en | Penning trap | |
| dc.subject.en | experimental results | |
| dc.subject.en | nucleus: semileptonic decay | |
| dc.subject.en | energy: transition | |
| dc.subject.en | experimental methods | |
| dc.title.en | Direct measurement of the mass difference of $^{72}$As-$^{72}$Ge rules out $^{72}$As as a promising $\beta$-decay candidate to determine the neutrino mass | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1103/PhysRevC.103.065502 | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Expérimentale [nucl-ex] | |
| dc.identifier.arxiv | 2103.08729 | |
| bordeaux.journal | Phys.Rev.C | |
| bordeaux.page | 065502 | |
| bordeaux.volume | 103 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03191148 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03191148v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Phys.Rev.C&rft.date=2021&rft.volume=103&rft.issue=6&rft.spage=065502&rft.epage=065502&rft.au=GE,%20Z.&ERONEN,%20T.&DE%20ROUBIN,%20A.&NESTERENKO,%20D.A.&HUKKANEN,%20M.&rft.genre=article |
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