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 precision of correlation measurements in neutron and nuclear β decay has now
reached the level of about 1% and better. At this level of precision, higher-order corrections …

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 …

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 …

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 …

A new precision half-life measurement of P 29 was conducted using the TwinSol β-counting
station at the University of Notre Dame Nuclear Science Laboratory. The resulting value of t …

Tests of the unitarity of the Cabbibo-Kobayashi-Masakawa (CKM) matrix offer an important
avenue for constraining the Standard Model of the electroweak interaction. Several methods …

The half-life of O 15 was measured using the β-Counting Station at the University of Notre
Dame's Nuclear Science Laboratory. Our new result, t 1/2= 122.308 (49) s, is the most …

A new precision half-life measurement of N 13 has been conducted using the TwinSol β-
counting station at the University of Notre Dame. The measured value of t 1/2 new= 597.05 …

Precise measurements of nuclear beta decays provide a unique insight into the Standard
Model due to their connection to the electroweak interaction. These decays help constrain …