Scalarful double beta decay
High Energy Physics - Phenomenology
2026-03-16 v2 Nuclear Theory
Abstract
We revisit scalar emissions in double beta decays of nuclei, often discussed in the context of Majoron models, in light of the latest developments on the study of neutrinoless double beta decay amplitudes from an effective field theory approach. The sensitivity of double beta decay experiments to this process is assessed through an analysis of spectral shapes, and the study is extended to massive scalars, scalars coupling to sterile neutrinos, and exotic right-handed effective couplings.
Cite
@article{arxiv.2511.19173,
title = {Scalarful double beta decay},
author = {Jordy de Vries and Lukáš Gráf and Vaisakh Plakkot and Dominik Starý},
journal= {arXiv preprint arXiv:2511.19173},
year = {2026}
}