A1 Journal article (refereed)
Search for Majoron-like particles with CUPID-0 (2023)

CUPID-0 Collaboration. (2023). Search for Majoron-like particles with CUPID-0. Physical Review D, 107(3), Article 032006. https://doi.org/10.1103/PhysRevD.107.032006

JYU authors or editors

Publication details

All authors or editors: CUPID-0 Collaboration

Journal or series: Physical Review D

ISSN: 2470-0010

eISSN: 2470-0029

Publication year: 2023

Publication date: 16/02/2023

Volume: 107

Issue number: 3

Article number: 032006

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevD.107.032006

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/85768

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2209.09490

Abstract

We present the first search for the Majoron-emitting modes of the neutrinoless double β decay (0νββχ0) 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 0νββχ0. 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 β 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 1.2×1023  yr in the case of n=1, 3.8×1022  yr for n=2, 1.4×1022  yr for n=3 and 2.2×1021  yr for n=7. These are the best limits on the 0νββχ0 half-life of the 82Se, and demonstrate the potentiality of the CUPID-0 technology in this field.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

VIRTA submission year: 2023

Preliminary JUFO rating: 2