Lattice QCD for precision physics

by Nikolai Husung (CERN)

Friday 19 Jun 2026, 14:30 → 16:30 Europe/Rome

U2-03 (Building U2 - Quantum)

Precision-physics tests of the Standard Model (SM) and searches for physics beyond the SM require precise theory predictions within the SM. Lattice QCD is able to provide non-perturbative predictions for the strong interaction such as the mass spectrum for hadrons, decay constants etc. Uncertainties in any of these predictions directly impact bounds on new physics and must be kept under control.

I will give a brief overview into the concepts underlying lattice QCD and highlight some common sources of uncertainties before focusing on the continuum extrapolation as one of the central steps to extract predictions for continuum physics but also as an unavoidable source of uncertainty. To this end, I will discuss the systematic description of the asymptotic lattice-spacing dependence in terms of Symanzik Effective Field Theory, our current understanding for different lattice formulations, and some of the gaps remaining.

slides_Husung.pdf