HADRON2023

Hadronic structure in BSM searches with CKM unitarity

7 Jun 2023, 14:20

20m

DAD - Room 0B (Genova, Italy)

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

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 ${\mathrm{\Delta }}_u=|V_{ud}{|}^2+|V_{us}{|}^2+|V_{ub}{|}^2-1=-0.0015(7)$ 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.

Presentation materials

Gorshteyn Vud CKM Hadron red.pdf