High-Precision Q-Value Measurement Confirms the Potential of 135Cs for Absolute Antineutrino Mass Scale Determination

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

doi:10.1103/PhysRevLett.124.222503

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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), Article 222503. https://doi.org/10.1103/PhysRevLett.124.222503

Julkaistu sarjassa

Physical Review Letters

Tekijät

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

Päivämäärä

2020

Oppiaine

Ydin- ja kiihdytinfysiikan huippuyksikkö Kiihdytinlaboratorio Centre of Excellence in Nuclear and Accelerator Based Physics Accelerator Laboratory

Tekijänoikeudet

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.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

0031-9007

Rahoittaja(t)

Suomen Akatemia; Euroopan komissio

Rahoitusohjelmat(t)

Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA

The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.

Lisätietoja rahoituksesta

This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012–2017 (Nuclear and Accelerator Based Physics Research at JYFL) and Projects No. 306980, No. 312544, No. 275389, No. 284516, and No. 295207. This work was supported by the EU Horizon 2020 research and innovation program under Grant No. 771036 (ERC CoG MAIDEN).

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