High-precision electron-capture Q value measurement of 111In for electron-neutrino mass determination
| 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 | TYRIN, K.S. | |
| dc.contributor.author | CANETE, L. | |
| dc.contributor.author | GELDHOF, S. | |
| dc.contributor.author | JOKINEN, A. | |
| dc.contributor.author | KANKAINEN, A. | |
| dc.contributor.author | KOSTENSALO, J. | |
| dc.contributor.author | KOTILA, J. | |
| dc.contributor.author | KRIVORUCHENKO, M.I. | |
| dc.contributor.author | MOORE, I.D. | |
| dc.contributor.author | NESTERENKO, D.A. | |
| dc.contributor.author | SUHONEN, J. | |
| dc.contributor.author | VILÉN, M. | |
| dc.date.issued | 2022 | |
| dc.description.abstractEn | A precise determination of the ground state <sup loc="post">111</sup>In (<math altimg="si1.svg"><mn>9</mn><mo stretchy="false">/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup></math>) electron capture to ground state of <sup loc="post">111</sup>Cd (<math altimg="si2.svg"><mn>1</mn><mo stretchy="false">/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup></math>) Q value has been performed utilizing the double Penning trap mass spectrometer, JYFLTRAP. A value of 857.63(17) keV was obtained, which is nearly a factor of 20 more precise than the value extracted from the Atomic Mass Evaluation 2020 (AME2020). The high-precision electron-capture Q value measurement along with the nuclear energy level data of 866.60(6) keV, 864.8(3) keV, 855.6(10) keV, and 853.94(7) keV for <sup loc="post">111</sup>Cd was used to determine whether the four states are energetically allowed for a potential ultra-low Q-value β decay or electron-capture decay. Our results confirm that the excited states of 866.60(6) keV with spin-parity (<math altimg="si3.svg"><msup><mrow><mi>J</mi></mrow><mrow><mi>π</mi></mrow></msup></math>) of 3/2<sup loc="post">+</sup> and 864.8(3) keV with <math altimg="si4.svg"><msup><mrow><mi>J</mi></mrow><mrow><mi>π</mi></mrow></msup><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>3</mn><mo stretchy="false">/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup></math> are ruled out due to their deduced electron-capture Q value being smaller than 0 keV at the level of around 20σ and 50σ, respectively. Electron-capture decays to the excited states at 853.94(7) keV (<math altimg="si5.svg"><msup><mrow><mi>J</mi></mrow><mrow><mi>π</mi></mrow></msup><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>7</mn><mo stretchy="false">/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup></math>) and 855.6(10) keV (<math altimg="si4.svg"><msup><mrow><mi>J</mi></mrow><mrow><mi>π</mi></mrow></msup><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>3</mn><mo stretchy="false">/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup></math>), are energetically allowed with Q values of 3.69(19) keV and 2.0(10) keV, respectively. The allowed decay transition <sup loc="post">111</sup>In (9/2<sup loc="post">+</sup>) → <sup loc="post">111</sup>Cd (7/2<sup loc="post">+</sup>), with a Q value of 3.69(19) keV, is a potential new candidate for neutrino-mass measurements by future EC experiments featuring new powerful detection technologies. The results show that the indium level <math altimg="si6.svg"><mn>2</mn><msub><mrow><mi>p</mi></mrow><mrow><mn>1</mn><mo stretchy="false">/</mo><mn>2</mn></mrow></msub></math> for this decay branch leads to a significant increase in the number of EC events in the energy region sensitive to the electron neutrino mass. | |
| dc.language.iso | en | |
| dc.subject.en | Penning trap | |
| dc.subject.en | Mass measurements | |
| dc.subject.en | Ultra-low | |
| dc.subject.en | value | |
| dc.subject.en | Electron capture | |
| dc.subject.en | Neutrino mass | |
| dc.subject.en | electron: capture | |
| dc.subject.en | neutrino: mass | |
| dc.subject.en | nucleus: energy levels | |
| dc.subject.en | mass: spectrometer | |
| dc.subject.en | excited state | |
| dc.subject.en | ground state | |
| dc.subject.en | indium | |
| dc.subject.en | experimental results | |
| dc.title.en | High-precision electron-capture Q value measurement of 111In for electron-neutrino mass determination | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.physletb.2022.137226 | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Expérimentale [nucl-ex] | |
| dc.identifier.arxiv | 2201.12573 | |
| bordeaux.journal | Phys.Lett.B | |
| bordeaux.page | 137226 | |
| bordeaux.volume | 832 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03572435 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03572435v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Phys.Lett.B&rft.date=2022&rft.volume=832&rft.spage=137226&rft.epage=137226&rft.au=GE,%20Z.&ERONEN,%20T.&DE%20ROUBIN,%20A.&TYRIN,%20K.S.&CANETE,%20L.&rft.genre=article |
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