Nuclei will play a prominent role in searches for physics beyond the Standard Model as the
active material in experiments. In order to reliably interpret new physics signals, one needs …

For well over half a century, precision studies of neutron and nuclear β decays have been at
the forefront of searches for exotic electroweak physics. Recent advances in nuclear ab initio …

We analyze the axial γ W-box diagram for I (JP)= 1 (0+) nuclei and provide a dispersion
representation of the nuclear-structure correction δ NS including its energy-dependent part …

The Fermi function F (Z, E) accounts for QED corrections to beta decays that are enhanced
at either small electron velocity β or large nuclear charge Z. For precision applications, the …

The anomalous dimension for heavy-heavy-light effective theory operators describing
nuclear beta decay is computed through three-loop order in the static limit. The result at …

In the limit of large nuclear charge, Z≫ 1, or small lepton velocity, β≪ 1, Coulomb
corrections to nuclear beta decay and related processes are enhanced as Z α/β and become …

We present quantum Monte Carlo calculations of magnetic moments, form factors, and
densities of A≤ 10 nuclei within a chiral effective field theory approach. We use the Norfolk …

This whitepaper presents the research priorities decided on by attendees of the 2022 Town
Meeting for Fundamental Symmetries, Neutrons and Neutrinos, which took place December …

This white paper was submitted to the 2022 Fundamental Symmetries, Neutrons, and
Neutrinos (FSNN) Town Hall Meeting in preparation for the next NSAC Long Range Plan …

Multiple high precision β-decay measurements are being carried out these days on various
nuclei, in search of beyond the Standard Model (SM) signatures. These measurements …