Constraints on absolute neutrino Majorana mass from current data

TL;DR

This paper derives new upper limits on the absolute neutrino Majorana mass using current neutrinoless double beta decay data and neutrino mixing parameters, highlighting the most restrictive constraints from recent isotope experiments.

Contribution

It provides updated constraints on neutrino Majorana masses by combining recent experimental results with advanced nuclear matrix element calculations.

Findings

Strongest constraint from $^{136}$Xe data of EXO-200 and KamLAND-Zen

Upper limits on neutrino mass eigenstates and flavor states

Relations among different neutrino masses proposed

Abstract

We present new constraints on the neutrino Majorana masses from the current data of neutrinoless double beta decay and neutrino flavour mixing. With the latest results of $0\nu\beta\beta$ progresses from various isotopes, including the recent calculations of the nuclear matrix elements, we find that the strongest constraint of the effective Majorana neutrino mass is from the $^{136}\rm{Xe}$ data of the EXO-200 and KamLAND-Zen collaborations. Further more, by combining the $0\nu\beta\beta$ experimental data with the neutrino mixing parameters from new analyses, we get the mass upper limits of neutrino mass eigenstates and flavour eigenstates and suggest several relations among these neutrino masses.