Simultaneous Measurement of the Half-Life and Spectral Shape of 115 In 𝛽 Decay with an Indium Iodide Cryogenic Calorimeter

Pagnanini, L.; Benato, G.; Carniti, P.; Celi, E.; Chiesa, D.; Corbett, J.; Dafinei, I.; Di Domizio, S.; Di Stefano, P.; Ghislandi, S.; Gotti, C.; Helis D. L.; Knobel, R.; Kostensalo, J.; Kotila, J.; Nagorny, S.; Pessina, G.; Pirro, S.; Pozzi, S.; Puiu, A.; Quitadamo, S.; Sisti, M.; Suhonen, J.; Kuznetsov, S.

doi:10.1103/PhysRevLett.133.122501

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Pagnanini, L., Benato, G., Carniti, P., Celi, E., Chiesa, D., Corbett, J., Dafinei, I., Di Domizio, S., Di Stefano, P., Ghislandi, S., Gotti, C., Helis D. L., Knobel, R., Kostensalo, J., Kotila, J., Nagorny, S., Pessina, G., Pirro, S., Pozzi, S., Puiu, A., Quitadamo, S., Sisti, M., Suhonen, J., Kuznetsov, S. (2024). Simultaneous Measurement of the Half-Life and Spectral Shape of 115 In 𝛽 Decay with an Indium Iodide Cryogenic Calorimeter. Physical Review Letters, 133, Article 122501. https://doi.org/10.1103/PhysRevLett.133.122501

Julkaistu sarjassa

Physical Review Letters

Tekijät

Pagnanini, L. |

Benato, G. |

Carniti, P. |

Celi, E. |

Chiesa, D. |

Corbett, J. |

Dafinei, I. |

Di Domizio, S. |

Di Stefano, P. |

Ghislandi, S. |

Gotti, C. |

Helis D. L. |

Knobel, R. |

Kostensalo, J. |

Kotila, J. |

Nagorny, S. |

Pessina, G. |

Pirro, S. |

Pozzi, S. |

Puiu, A. |

Quitadamo, S. |

Sisti, M. |

Suhonen, J. |

Kuznetsov, S.

Päivämäärä

2024

Tekijänoikeudet

Current bounds on neutrino Majorana mass are affected by significant uncertainties in the nuclear calculations for neutrinoless double-beta decay. A key issue for a data-driven improvement of the nuclear theory is the actual value of the axial coupling constant gA, which can be investigated through forbidden β-decays. We present the first measurement of 4th-forbidden β-decay of 115In with a cryogenic calorimeter based on Indium Iodide. Exploiting the enhanced spectral shape method for the first time to this isotope, our study accurately determines simultaneously spectral shape, gA, and half-life. The Interacting Shell Model, which best fits our data, indicates a half-life for this decay at T1/2=(5.26±0.06)×1014,yr.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

0031-9007

Rahoittaja(t)

Suomen Akatemia

Rahoitusohjelmat(t)

Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA

Lisätietoja rahoituksesta

This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101029688 (ACCESS—Array of Cryogenic Calorimeters to Evaluate Spectral Shape). This work was supported by the Academy of Finland, Grants No. 314733, No. 320062, and No. 345869. J. Kotila and J. Suhonen acknowledge support from project PNRR-I ... showmore

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