Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Hadronic vacuum polarization from step scaling

Aug 12, 2022, 2:30 PM
20m
CP1-HSZ/Ground-0.001 - HS3 (CP1-HSZ)

CP1-HSZ/Ground-0.001 - HS3

CP1-HSZ

50
Oral Presentation QCD in searches for physics beyond the Standard Model QCD in searches for physics beyond the Standard Model

Speaker

Fabian Justus Frech

Description

It is well known that the electromagnetic coupling constant alpha is an energy scale dependent quantity. Some of these dependencies originate from hadrons and can therefore be computed using Lattice QCD. The value at the mass of the Z boson is of particular interest. The large energy range makes a direct simulation unfeasible, so it has to be split up into several ranges. Setting the scale of the smaller and finer lattices, which cover the higher energies, is a challenging task. We present a general method to handle this issue in lattice gauge theories. A test of this strategy in two-dimensional QED is done and the hadronic vacuum polarization is computed on an energy range that spans two orders of magnitude.

Primary author

Fabian Justus Frech

Presentation materials