We report on our computation of the pion transition form factor FP→γ∗γ∗ from twisted mass lattice QCD in order to determine the numerically dominant light pseudoscalar pole contribution in the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon aμ=(g−2)μ. The pion transition form factor is computed directly at the physical point. We present first results for our estimate of the pion-pole contribution with kinematic setup for the pion at rest.
@article{arxiv.2112.03586,
title = {Pion-pole contribution to HLbL from twisted mass lattice QCD at the physical point},
author = {Sebastian Burri and Constantia Alexandrou and Simone Bacchio and Georg Bergner and Jacob Finkenrath and Andrew Gasbarro and Kyriakos Hadjiyiannakou and Karl Jansen and Bartosz Kostrzewa and Giannis Koutsou and Konstantin Ottnad and Marcus Petschlies and Ferenc Pittler and Fernanda Steffens and Carsten Urbach and Urs Wenger},
journal= {arXiv preprint arXiv:2112.03586},
year = {2022}
}
Comments
9 pages, 7 figures; Proceedings of the 38th International Symposium on Lattice Field Theory - Lattice 2021, Zoom/Gather@Massachusetts Institute of Technology