Speaker
Ms
Vera Guelpers
(University of Mainz)
Description
We study the hadronic contribution to the $\gamma$-$Z$ mixing, which determines the leading order hadronic contribution to the running of the electroweak mixing angle $\theta_W$. The required vacuum polarization function $\Pi^{\gamma Z}$ is calculated from the appropriate vector correlation functions in a mixed time-momentum representation. We explicitly calculate the connected and the disconnected contributions to such vector correlators using $N_f=2$ dynamical flavors of non-perturbatively $O(a)$-improved Wilson fermions.
Primary author
Ms
Vera Guelpers
(University of Mainz)
Co-authors
Dr
Georg von Hippel
(University of Mainz)
Prof.
Hartmut Wittig
(University of Mainz)
Prof.
Harvey Meyer
(University of Mainz)
