Speaker
Mikhail Gorshteyn
(Mainz University)
Description
Precision tests of the Standard Model with beta decays and unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix offer a way to search for BSM signals, which is competitive and complementary to the collider searches. Currently, the CKM top-row unitarity constraint shows a deficit $\Delta_u=|V_{ud}|^2+|V_{us}|^2+|V_{ub}|^2-1=-0.0015(7)$ which may point to possible New Physics contributions. To arrive to the impressive $10^{-4}$ precision, hadronic structure-dependent radiative corrections have to be under control. I review the current status of these SM corrections, and discuss the impact of future developments in theory and experiment.
Primary author
Mikhail Gorshteyn
(Mainz University)
