A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Determining gA/gV with High-Resolution Spectral Measurements Using a LiInSe2 Bolometer (2022)


Leder, A. F., Mayer, D., Ouellet, J. L., Danevich, F. A., Dumoulin, L., Giuliani, A., Kostensalo, J., Kotila, J., de Marcillac, P., Nones, C., Novati, V., Olivieri, E., Poda, D., Suhonen, J., Tretyak, V. I., Winslow, L., & Zolotarova, A. (2022). Determining gA/gV with High-Resolution Spectral Measurements Using a LiInSe2 Bolometer. Physical Review Letters, 129(23), Article 232502. https://doi.org/10.1103/PhysRevLett.129.232502


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatLeder, A. F.; Mayer, D.; Ouellet, J. L.; Danevich, F. A.; Dumoulin, L.; Giuliani, A.; Kostensalo, J.; Kotila, J.; de Marcillac, P.; Nones, C.; et al.

Lehti tai sarjaPhysical Review Letters

ISSN0031-9007

eISSN1079-7114

Julkaisuvuosi2022

Ilmestymispäivä02.12.2022

Volyymi129

Lehden numero23

Artikkelinumero232502

KustantajaAmerican Physical Society (APS)

JulkaisumaaYhdysvallat (USA)

Julkaisun kielienglanti

DOIhttps://doi.org/10.1103/PhysRevLett.129.232502

Julkaisun avoin saatavuusEi avoin

Julkaisukanavan avoin saatavuus

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/85154

Rinnakkaistallenteen verkko-osoite (pre-print)https://arxiv.org/abs/2206.06559


Tiivistelmä

Neutrinoless double beta decay (0νββ) processes sample a wide range of intermediate forbidden nuclear transitions, which may be impacted by quenching of the axial vector coupling constant (gA/gV), the uncertainty of which plays a pivotal role in determining the sensitivity reach of 0νββ experiments. In this Letter, we present measurements performed on a high-resolution LiInSe2 bolometer in a “source = detector” configuration to measure the spectral shape of the fourfold forbidden β decay of 115In. The value of gA/gV is determined by comparing the spectral shape of theoretical predictions to the experimental β spectrum taking into account various simulated background components as well as a variety of detector effects. We find evidence of quenching of gA/gV at >5σ with a model-dependent quenching factor of 0.655±0.002 as compared to the free-nucleon value for the interacting shell model. We also measured the 115In half-life to be [5.18±0.06(stat)+0.005−0.015(sys)]×1014 yr within the interacting shell model framework. This Letter demonstrates the power of the bolometeric technique to perform precision nuclear physics single-β decay measurements, which along with improved nuclear modeling can help reduce the uncertainties in the calculation of several decay nuclear matrix elements including those used in 0νββ sensitivity calculations.


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Liittyvät organisaatiot


Hankkeet, joissa julkaisu on tehty


OKM-raportointiKyllä

Raportointivuosi2022

JUFO-taso3


Viimeisin päivitys 2024-25-03 klo 08:49