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 …

This is a review article about neutrino mass and mixing and flavour model building
strategies based on modular symmetry. After an introduction to neutrino mass and lepton …

We present cosmological constraints from a gravitational lensing mass map covering 9400
deg 2 reconstructed from measurements of the cosmic microwave background (CMB) made …

We explore generalized global symmetries in theories of physics beyond the standard
model. Theories of Z′ bosons generically contain “noninvertible” chiral symmetries, whose …

The observation of neutrino oscillations and hence non-zero neutrino masses provided a
milestone in the search for physics beyond the Standard Model. But even though we now …

The absolute scale of the neutrino mass plays a critical role in physics at every scale, from
the subatomic to the cosmological. Measurements of the tritium end-point spectrum have …

A bstract The Kähler potentials of modular symmetry models receive unsuppressed
contributions which may be controlled by a flavor symmetry, where the combination of the …

The observed pattern of fermion masses and mixing is an outstanding puzzle in particle
physics, generally known as the flavor problem. Over the years, guided by precision neutrino …

We present the results of a National Science Foundation Project Scoping Workshop, the
purpose of which was to assess the current status of calculations for the nuclear matrix …

A bstract We present minimalist constructions for lepton masses and mixing based on
flavour symmetry under the modular group Γ N of lowest level N= 2. As opposed to the only …