Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Hadronic structure in BSM searches with CKM unitarity

Jun 7, 2023, 2:20 PM
DAD - Room 0B (Genova, Italy)

DAD - Room 0B

Genova, Italy

Contributed Hadrons and physics beyond the standard model Hadrons and physics beyond the standard model


Mikhail Gorshteyn (Mainz University)


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)

Presentation materials