Double Beta Decay APPEC Committee Report

Abstract

This report constitutes the roadmap document prepared by the Double Beta Decay APPEC Committee for the APPEC SAC on the future neutrinoless double beta decay experimental programme in Europe. It reviews the existing, planned and proposed technologies for neutrinoless double beta decay, their discovery potential and technical challenges, making a critical examination of resources and schedules. It also provides a concise discussion of the theoretical issues and of the status and uncertainties on the nuclear matrix element evaluation.

53 pages, 11 figures, 3 SWOT tables. Updated recommendations and experimental information

References in corpus (9)

• Energy density functional study of nuclear matrix elements for neutrinoless $\beta \beta$ decay
• $0\nu \beta \beta$ and $2\nu \beta \beta$ nuclear matrix elements in the interacting boson model with isospin restoration
• $0\nu \beta \beta$ and $2\nu \beta \beta$ nuclear matrix elements, QRPA, and isospin symmetry restoration
• Limits on Majoron-emitting double-beta decays of Xe-136 in the KamLAND-Zen experiment
• Random coincidence of $2\nu 2\beta$ decay events as a background source in bolometric $0\nu 2\beta$ decay experiments
• Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment
• First test of an enriched ${}^{116}$CdWO${}_4$ scintillating bolometer for neutrinoless double-beta-decay searches
• Status and prospects of the NEXT experiment for neutrinoless double beta decay searches
• Single Molecule Fluorescence Imaging as a Technique for Barium Tagging in Neutrinoless Double Beta Decay