Speaker
Dr
Marco Cè
(Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz)
Description
We present a preliminary study of the leading hadronic contribution to the running of the electroweak mixing angle $\theta_W$. The running is extracted from the correlation function of the electromagnetic current with the (vector part of the) weak neutral current using the Lorentz-covariant coordinate-space method recently introduced by Meyer. Both connected and disconnected contributions have been computed on $N_f=2+1$ non-perturbatively $\mathcal{O}(a)$-improved Wilson fermions configurations.
Similar covariant coordinate-space methods can be used to compute the leading hadronic contribution to the anomalous magnetic moment $g-2$ of the muon and to the running of the QED coupling $\alpha$.
Primary author
Dr
Marco Cè
(Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz)
Co-authors
Dr
Antoine Gerardin
(Institute for Nuclear Physics, University of Mainz)
Prof.
Harvey B. Meyer
(Johannes Gutenberg University Mainz)
Dr
Konstantin Ottnad
(University of Mainz)