Speaker
Ryan Plestid
Description
Superallowed ($0^+\rightarrow 0^+$) beta decays provide the most precise extraction of $|V_{ud}|$ and require radiative corrections at a precision of roughly 100 ppm. In regions where photon wavelengths are long compared to the radius of the nucleus these corrections are coherently enhanced by the nuclear charge, $Z\in [6,37]$. In this talk I will describe how effective field theory can be used to isolate coherently enhanced regions, and will discuss new results for the anomalous dimension that governs logarithmically enhanced contributions at high orders in perturbation theory.
Authors
Prof.
Richard Hill
(University of Kentucky/Fermilab)
Ryan Plestid
