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arXiv · 1908.08355

Towards the meV limit of the effective neutrino mass in neutrinoless double-beta decays

Jun Cao·Guo-yuan Huang·Yu-Feng Li·Yifang Wang·Liang-Jian Wen·Zhi-zhong Xing·Zhen-hua Zhao·Shun Zhou
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Abstract

In this paper, we emphasize why it is important for future neutrinoless double-beta ($0νββ$) decay experiments to reach the sensitivity to the effective neutrino mass $|m^{}_{ββ}| \approx 1~{\rm meV}$. Assuming such a sensitivity and the precisions on neutrino oscillation parameters after the JUNO experiment, we fully explore the constrained regions of the lightest neutrino mass $m^{}_1$ and two Majorana-type CP-violating phases $\{ρ, σ\}$. The implications for the neutrino mass spectrum, the effective neutrino mass $m^{}_β$ in beta decays and the sum of three neutrino masses $Σ\equiv m^{}_1 + m^{}_2 + m^{}_3$ relevant for cosmological observations are also discussed.

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Jun Cao, Guo-yuan Huang, Yu-Feng Li, Yifang Wang, Liang-Jian Wen, Zhi-zhong Xing, Zhen-hua Zhao, Shun Zhou. 2019-08-22. Towards the meV limit of the effective neutrino mass in neutrinoless double-beta decays. https://doi.org/10.1088/1674-1137%2F44%2F3%2F031001

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