Neutrinoless double-beta decay, which is a very old and yet elusive process, is reviewed. Its
observation will signal that the lepton number is not conserved and that the neutrinos are …

The observation of neutrinoless double beta decay (DBD) will have important
consequences. First it will signal that lepton number is not conserved and the neutrinos are …

The sum of the masses of the three neutrino mass eigenstates is now constrained both from
above and below, and lies between 55 and 6900 meV. The lower limit is set by neutrino …

The existence of a cosmic neutrino background–the analogue of the cosmic microwave
background–is a fundamental prediction of standard big bang cosmology. Up to now, the …

Background: The standard kinematic method for determining neutrino mass from the β
decay of tritium or other isotope is to measure the shape of the electron spectrum near the …

We present the relativistic calculation of the β-decay of tritium in a hadron model. The
elementary particle treatment (EPT) of the transition H 3→ He 3+ e-+ ν¯ e is performed in …

The atomic nucleus offers a unique opportunity to study fundamental properties and
interactions of neutrinos. The main subjects of interest are the nature of neutrinos (Dirac or …

In the last years, neutrino physics has provided exciting discoveries that for the first time
have cracked the solid building of the Standard Model. However, many mysteries remain …

Abstract Within the Standard Model, the weak interaction of quarks and leptons is
characterized by certain symmetry properties, such as maximal breaking of parity and …

In view of recent measurements of the mixing angle θ 13, we investigate the possibility to
determine the difference of two CP Majorana phases of the neutrino mixing matrix from the …