We present the first search for the Majoron-emitting modes of the neutrinoless double beta decay using scintillating cryogenic calorimeters. We analyzed the CUPID-0 Phase I data using a Bayesian approach to reconstruct the background sources activities, and evaluate the potential contribution of the 82Se Majoron-emitting modes of the neutrinoless double beta decay. We considered several possible theoretical models which predict the existence of a Majoron-like boson coupling to the neutrino. The energy spectra arising from the emission of such bosons in the neutrinoless double beta decay have spectral indices n = 1, 2, 3, or 7. We found no evidence of any of these decay modes, setting a lower limit (90% of credibility interval) on the half-life of 1.2 × 10^23 yr in the case of n = 1, 3.8 × 10^22 yr for n = 2, 1.4 × 10^22 yr for n = 3 and 2.2 × 10^21 yr for n = 7. These are the best limits on the Majoron-emitting modes of the neutrinoless double beta decay half-life of the 82Se, and demonstrate the potentiality of the CUPID-0 technology in this field.
Search for Majoron-like particles with CUPID-0 / Azzolini, O., Beeman, J. W., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., Bucci, C., Capelli, S., Caracciolo, V., Cardani, L., Carniti, P., Casali, N., Celi, E., Chiesa, D., Clemenza, M., Colantoni, I., Cremonesi, O., Cruciani, A., D’Addabbo, A., Dafinei, I., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 107:3(2023). [10.1103/PhysRevD.107.032006]
Search for Majoron-like particles with CUPID-0
Bellini, F.;Cardani, L.;Casali, N.;Colantoni, I.;Cruciani, A.;Dafinei, I.;Dompè, V.;Fantini, G.;Ferroni, F.;Martinez, M.;Pettinacci, V.;Ressa, A.
;Vignati, M.;
2023
Abstract
We present the first search for the Majoron-emitting modes of the neutrinoless double beta decay using scintillating cryogenic calorimeters. We analyzed the CUPID-0 Phase I data using a Bayesian approach to reconstruct the background sources activities, and evaluate the potential contribution of the 82Se Majoron-emitting modes of the neutrinoless double beta decay. We considered several possible theoretical models which predict the existence of a Majoron-like boson coupling to the neutrino. The energy spectra arising from the emission of such bosons in the neutrinoless double beta decay have spectral indices n = 1, 2, 3, or 7. We found no evidence of any of these decay modes, setting a lower limit (90% of credibility interval) on the half-life of 1.2 × 10^23 yr in the case of n = 1, 3.8 × 10^22 yr for n = 2, 1.4 × 10^22 yr for n = 3 and 2.2 × 10^21 yr for n = 7. These are the best limits on the Majoron-emitting modes of the neutrinoless double beta decay half-life of the 82Se, and demonstrate the potentiality of the CUPID-0 technology in this field.| File | Dimensione | Formato | |
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