New measurement of double-β decays of 100Mo to excited states of 100Ru with the CUPID-Mo experiment
CUPID-Mo Collaboration. (2023). New measurement of double-β decays of 100Mo to excited states of 100Ru with the CUPID-Mo experiment. Physical Review C, 107(2), Article 025503. https://doi.org/10.1103/PhysRevC.107.025503
Julkaistu sarjassa
Physical Review CTekijät
Päivämäärä
2023Tekijänoikeudet
© 2023 American Physical Society
The CUPID-Mo experiment, located at the Laboratoire Souterrain de Modane (France), was a demonstrator experiment for CUPID. It consisted of an array of 20Li2100MoO4 (LMO) calorimeters, each equipped with a Ge light detector for particle identification. In this work, we present the result of a search for two-neutrino and neutrinoless double-β decays of 100Mo to the first 0+ and 2+ excited states of 100Ru using the full CUPID-Mo exposure (2.71kgyr of LMO). We measure the half-life of 2νββ decay to the 0+1 state as T2ν→0+11/2=(7.5±0.8(stat.)+0.4−0.3(syst.))×1020yr. The bolometric technique enables measurement of the electron energies as well as the γ rays from nuclear deexcitation and this allows us to set new limits on the two-neutrino decay to the 2+1 state of T2ν→2+11/2>4.4×1021yr(90% c.i.) and on the neutrinoless modes of T0ν→2+11/2>2.1×1023yr(90% c.i.), T0ν→0+11/2>1.2×1023yr(90% c.i.). Information on the electrons' spectral shape is obtained, which allows us to make the first comparison of the single and higher state dominance 2νββ decay models for the 0+1 excited state of 100Ru.
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Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
2469-9985Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/182785238
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Suomen AkatemiaRahoitusohjelmat(t)
Akatemiatutkijan tutkimuskulut, SA; Akatemiatutkija, SALisätietoja rahoituksesta
This work has been partially performed in the framework of the LUMINEU program, a project funded by the Agence Nationale de la Recherche (ANR, France). The help of the technical staff of the Laboratoire Souterrain de Modane and of the other participant laboratories is gratefully acknowledged. We thank the mechanical workshops of CEA/SPEC for their valuable contribution in the detector conception and of LAL (now IJCLab) for fabricating the detector holders. F.A.D., V.V.K., V.I.T., and M.Z. were supported in part by the National Research Foundation of Ukraine Grant No. 2020.02/0011. O.G.P. was supported in part by the project “Investigations of rare nuclear processes” of the program of the National Academy of Sciences of Ukraine “Laboratory of young scientists.” A.S.B., S.I.K., E.P. Makarov, V.N.S., and V.I.U. were supported by the Russian Science Foundation under Grant No. 18-12-00003. We acknowledge the support of the P2IO LabEx (ANR-10-LABX0038) in the framework “Investissements d'Avenir” (ANR-11-IDEX-0003-01—Project “BSM-nu”) managed by the Agence Nationale de la Recherche (ANR), France. Additionally the work is supported by the Istituto Nazionale di Fisica Nucleare (INFN) and by the EU Horizon2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 754496. This work is also based on support by the US Department of Energy (DOE) Office of Science under Contract No. DE-AC02-05CH11231, and by the DOE Office of Science, Office of Nuclear Physics under Contracts No. DE-FG02-08ER41551 and No. DE-SC0011091; by the France-Berkeley Fund, the MISTI-France fund and by the Chateau-briand Fellowship of the Office for Science & Technology of the Embassy of France in the United States. J.K. is supported by Academy of Finland (Grants No. 314733, No. 320062, and No. 345869) This research used resources of the National Energy Research Scientific Computing Center (NERSC). This work makes use of the diana data analysis software which has been developed by the Cuoricino, CUORE, LUCIFER, and CUPID-0 Collaborations.![showless](/themes/JYX2//images/showless.png)
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