# The hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon from lattice QCD

#### The hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon from lattice QCD

- Event time: 2:00pm until 3:00pm
- Event date: 1st February 2023
- Speaker: Simon Kuberski (Johannes Gutenberg-Universität Mainz)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

The long-standing tension between theoretical predictions and

experimental results for the anomalous magnetic moment (g-2) of the muon

is considered to be one of the most promising directions to search for

physics beyond the Standard Model of particle physics at the high

precision frontier. The uncertainty of the theory prediction is

dominated by non-perturbative hadronic contributions. It has to be

reduced considerably in the near future to confront upcoming

experimental results. Lattice QCD will play a central role in this task.

I will discuss the challenges connected with a sub-percent precision

determination of the hadronic vacuum polarization (HVP) contribution to

the muon g-2 from lattice QCD and how these can be addressed. In the

last year, a set of results has been obtained for the contribution to

the HVP at intermediate energies which is especially well suited for the

evaluation on the lattice. I will present some details of our

calculation using 2+1 flavors of O(a) improved Wilson fermions on

ensembles generated by the CLS effort. The result at the physical point

is well compatible with other lattice results but shows a significant

deviation with respect to the evaluation based on data-driven methods.

This tension has to be understood by the community in order to provide a

reliable Standard Model prediction for the HVP.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..