Abstract The Standard Model lacks an organizing principle to describe quark and lepton
“flavours”. Neutrino oscillation experiments show that leptons mix very differently from …

A bstract The gauge-invariant operators up to dimension six in the low-energy effective field
theory below the electroweak scale are classified. There are 70 Hermitian dimension-five …

The relativistic configuration-interaction density functional theory is developed for even-even
and odd-odd nuclei and is used to predict the nuclear matrix element of the neutrinoless ββ …

In this report we discuss the main theories to understand the origin of baryon and lepton
number violation in physics beyond the Standard Model. We present the theoretical …

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 …

We propose an A 4 extension of the Standard Model with a Lepton Quarticity symmetry
correlating dark matter stability with the Dirac nature of neutrinos. The flavor symmetry …

Abstract According to the “Black Box” theorem the experimental confirmation of neutrinoless
double beta decay (0 ν 2 β) would imply that at least one of the neutrinos is a Majorana …

Abstract Neutrinoless Double Beta Decay is a hypothesised nuclear process in which two
neutrons simultaneously decay into protons with no neutrino emission. The prized …

We propose that neutrino Dirac masses can be generated through a scotogenic scenario
while violating the lepton number by four units by extending the standard model to have an …

Oscillation studies play a central role in elucidating at least some aspects of the flavor
problem. Here we examine the status of the predictions of a lepton quarticity flavor theory of …