The discovery of neutrinoless β β decay could soon be within reach. This hypothetical
ultrarare nuclear decay offers a privileged portal to physics beyond the standard model of …

The nuclear matrix elements that govern the rate of neutrinoless double beta decay must be
accurately calculated if experiments are to reach their full potential. Theorists have been …

We tabulate the ground-state odd-proton and odd-neutron spins and parities, proton and
neutron pairing gaps, total binding energy, one-and two-neutron separation energies …

The theoretical and experimental issues relevant to neutrinoless double beta decay are
reviewed. The impact that a direct observation of this exotic process would have on …

Within the quasiparticle random-phase approximation (QRPA) we achieve partial restoration
of the isospin symmetry and hence fulfillment of the requirement that the 2 ν β β Fermi matrix …

We review the particle physics aspects of neutrino-less double beta decay. This process can
be mediated by light massive Majorana neutrinos (standard interpretation) or by something …

Weak-interaction and nuclear-structure aspects of double beta decay are reviewed. Starting
from effective electroweak lagrangians, decay rates for the two-neutrino and neutrinoless …

This biennial review summarizes much of Particle Physics. Using data from previous
editions, plus 1900 new measurements from 700 papers, we list, evaluate, and average …

A review is given of our present knowledge of collective spin-isospin excitations in nuclei.
Most of this knowledge comes from intermediate-energy charge-exchange reactions and …

We review recent studies of the evolution of collective excitations in atomic nuclei far from
the valley of β-stability. Collective degrees of freedom govern essential aspects of nuclear …