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.; Di Domizio, S.; Dompè, V.; Fantini, G.; Ferroni, F.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Keppel, G.; Kotila, J.; Martinez, M.; Nagorny, S.; Nastasi, M.; Nisi, S.; Nones, C.; Orlandi, D.; Pagnanini, L.; Pallavicini, M.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Ressa, A.; Rusconi, C.; Schäffner, K.; Tomei, C.; Vignati, M.; Zolotarova, A. S.. - 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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