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Simultaneous Measurement of Half-Life and Spectral Shape of $^{115}$In $β$-decay with an Indium Iodide Cryogenic Calorimeter

Fuente: arXiv

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Détails bibliographiques
Auteurs principaux:	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.
Format:	Preprint
Publié:	2024
Sujets:	Nuclear Experiment Nuclear Theory
Accès en ligne:	Acceder al recurso
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_version_	1866909481137340416
author	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.
author_facet	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.
contents	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 $g_A$, which can be investigated through forbidden $β$-decays. We present the first measurement of 4$^{th}$-forbidden $β$-decay of $^{115}$In 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, $g_A$, and half-life. The Interacting Shell Model, which best fits our data, indicates a half-life for this decay at $T_{1/2}=(5.26\pm0.06) \times 10^{14}$,yr.
format	Preprint
id	arxiv_https___arxiv_org_abs_2401_16059
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Simultaneous Measurement of 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. Nuclear Experiment Nuclear Theory 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 $g_A$, which can be investigated through forbidden $β$-decays. We present the first measurement of 4$^{th}$-forbidden $β$-decay of $^{115}$In 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, $g_A$, and half-life. The Interacting Shell Model, which best fits our data, indicates a half-life for this decay at $T_{1/2}=(5.26\pm0.06) \times 10^{14}$,yr.
title	Simultaneous Measurement of Half-Life and Spectral Shape of $^{115}$In $β$-decay with an Indium Iodide Cryogenic Calorimeter
topic	Nuclear Experiment Nuclear Theory
url	https://arxiv.org/abs/2401.16059