9th Plenary Workshop of the Muon g-2 Theory Initiative

HLbL contributions from twisted-mass lattice QCD

Aug 6, 2026, 2:30 PM

30m

GS117 and GS119 (Department of Physics, University of Connecticut)

Lattice HLbL

Speaker

Urs Wenger (University of Bern)

Description

We present results for the hadronic light-by-light (HLbL) contribution from lattice-QCD calculations based on ETMC's Nf​=2+1+1 Wilson-clover twisted-mass ensembles at the physical point. These include continuum extrapolations for the strange- and charm-quark connected contributions and results for the light-quark connected and 2+2 disconnected contributions at two lattice spacings.