Speaker
Description
We investigate the impact of the latest Mainz/CLS collaboration's result for the hadronic vacuum polarization (HVP) on the electroweak (EW) precision tests. The subject is closely related to the muon g-2 via the HVP. Both precision tests come under scrutiny with respect to physics Beyond the Standard Model. Our HVP calculation is used for the running electromagnetic coupling at low energy and linked at various matching energies to the higher energy running evaluated by phenomenological approaches. We predict the electromagnetic coupling at the Z-pole (alpha(Mz)), providing a lattice-driven input to EW-global fits. Our evaluation of alpha(Mz) is stable for a wide range of matching energies and comes with various systematics taken into account. In light of our alpha(Mz) determination, we discuss a known tension in the EW-global fits.
