High-precision measurement of a low Q value for allowed β−-decay of 131I related to neutrino mass determination

Eronen, T.; Ge, Z.; de Roubin, A.; Ramalho, M.; Kostensalo, J.; Kotila, J.; Beliushkina, O.; Delafosse, C.; Geldhof, S.; Gins, W.; Hukkanen, M.; Jokinen, A.; Kankainen, A.; Moore, I.D.; Nesterenko, D.A.; Stryjczyk, M.; Suhonen, J.

doi:10.1016/j.physletb.2022.137135

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Eronen, T., Ge, Z., de Roubin, A., Ramalho, M., Kostensalo, J., Kotila, J., Beliushkina, O., Delafosse, C., Geldhof, S., Gins, W., Hukkanen, M., Jokinen, A., Kankainen, A., Moore, I.D., Nesterenko, D.A., Stryjczyk, M., & Suhonen, J. (2022). High-precision measurement of a low Q value for allowed β−-decay of 131I related to neutrino mass determination. Physics Letters B, 830, Article 137135. https://doi.org/10.1016/j.physletb.2022.137135

Julkaistu sarjassa

Physics Letters B

Tekijät

Eronen, T. |

Ge, Z. |

de Roubin, A. |

Ramalho, M. |

Kostensalo, J. |

Kotila, J. |

Beliushkina, O. |

Delafosse, C. |

Geldhof, S. |

Gins, W. |

Hukkanen, M. |

Jokinen, A. |

Kankainen, A. |

Moore, I.D. |

Nesterenko, D.A. |

Stryjczyk, M. |

Suhonen, J.

Päivämäärä

2022

Oppiaine

Resurssiviisausyhteisö Kiihdytinlaboratorio School of Resource Wisdom Accelerator Laboratory

Tekijänoikeudet

The ground-state-to-ground-state β−-decay 131I (7/2+) → 131Xe (3/2+) Q value was determined with high precision utilizing the double Penning trap mass spectrometer JYFLTRAP at the IGISOL facility. The Q value of this β−-decay was found to be Q = 972.25(19) keV through a cyclotron frequency ratio measurement with a relative precision of 1.6 × 10−9. This was realized using the phase-imaging ion-cyclotron-resonance technique. The new Q value is more than 3 times more precise and 2.3σ higher (1.45 keV) than the value extracted from the Atomic Mass Evaluation 2020. Our measurement confirms that the β−-decay to the 9/2+ excited state at 971.22(13) keV in 131Xe is energetically allowed with a Q value of 1.03(23) keV while the decay to the 7/2+ state at 973.11(14) keV was found to be energetically forbidden. Nuclear shell-model calculations with established two-body interactions, alongside an accurate phase-space factor and a statistical analysis of the log f t values of known allowed β deca ... showmore

Julkaisija

Elsevier

ISSN Hae Julkaisufoorumista

0370-2693

Rahoittaja(t)

Suomen Akatemia; Euroopan komissio

Rahoitusohjelmat(t)

Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA; Akatemiahanke, 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

We acknowledge the support 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, 312544, 275389, 284516, 295207, 314733, 318043, 327629 and 320062. The support by the EU Horizon 2020 research and innovation program under grant No. 771036 (ERC CoG MAIDEN) is acknowledged.

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