Limits on the neutrino mass from neutrinoless double-$\beta $ decay

TL;DR

This paper refines the limits on neutrino mass by combining advanced nuclear matrix element calculations with phase space factors, crucial for understanding neutrino properties through neutrinoless double-beta decay.

Contribution

It introduces an improved calculation framework for nuclear matrix elements and phase space factors, leading to more precise neutrino mass constraints.

Findings

Set new limits on light neutrino mass

Constrained inverse heavy neutrino mass

Enhanced accuracy of nuclear matrix element calculations

Abstract

Neutrinoless double-$\beta$ decay is of fundamental importance for the determining neutrino mass. By combining a calculation of nuclear matrix elements within the framework of the microscopic interacting boson model (IBM-2) with an improved calculation of phase space factors, we set limits on the average light neutrino mass and on the average inverse heavy neutrino mass (flavor violating parameter).