Pion Pole Contribution to HLbL from Twisted Mass Lattice QCD at the physical point

27 Jul 2021, 06:45
15m
Oral presentation QCD in searches for physics beyond the Standard Model QCD in searches for physics beyond the Standard Model

Speaker

Sebastian Andreas Burri (Universität Bern)

Description

We report on our computation of the pion transition form factor $\mathcal{F}_{\pi \rightarrow \gamma^* \gamma^*}$ from twisted mass lattice QCD, to determine the numerically dominant light pseudoscalar pole contribution for the analysis of hadronic light-by-light scattering in the muon $g-2$. The pion transition form factor is computed directly at the physical point. We present first results for our estimate of the pion pole contribution to $a_\mu$ with kinematic setup of the pion at rest at a single lattice spacing.

Primary authors

Sebastian Andreas Burri (Universität Bern) Urs Wenger Marcus Petschlies (HISKP, Bonn University) Andrew David Gasbarro (Universität Bern)

Presentation materials