Addendum to: Global constraints on absolute neutrino masses and their ordering
Abstract
We revisit our previous work [Phys. Rev. D 95, 096014 (2017)] where neutrino oscillation and nonoscillation data were analyzed in the standard framework with three neutrino families, in order to constrain their absolute masses and to probe their ordering (either normal, NO, or inverted, IO). We include updated oscillation results to discuss best fits and allowed ranges for the two squared mass differences and , the three mixing angles , and , as well as constraints on the CP-violating phase , plus significant indications in favor of NO vs IO at the level of . We then consider nonoscillation data from beta decay, from neutrinoless double beta decay (if neutrinos are Majorana), and from various cosmological input variants (in the data or the model) leading to results dubbed as default, aggressive, and conservative. In the default option, we obtain from nonoscillation data an extra contribution in favor of NO, and an upper bound on the sum of neutrino masses eV at ; both results - dominated by cosmology - can be strengthened or weakened by using more aggressive or conservative options, respectively. Taking into account such variations, we find that the combination of all (oscillation and nonoscillation) neutrino data favors NO at the level of , and that is constrained at the level within eV. The upper edge of this allowed range corresponds to an effective -decay neutrino mass eV, at the sensitivity frontier of the KATRIN experiment.
Keywords
Cite
@article{arxiv.2003.08511,
title = {Addendum to: Global constraints on absolute neutrino masses and their ordering},
author = {Francesco Capozzi and Eleonora Di Valentino and Eligio Lisi and Antonio Marrone and Alessandro Melchiorri and Antonio Palazzo},
journal= {arXiv preprint arXiv:2003.08511},
year = {2020}
}
Comments
10 pages, including 3 tables and 5 figures. Text clarified, references added, results unchanged. To appear in PRD