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arXiv · 2211.04159

Pseudoscalar transition form factors and the hadronic light-by-light contribution to the muon $g-2$

Antoine Gérardin·Jana N. Guenther·Lukas Varnhorst·Willem E. A. Verplanke
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Abstract

We report on our progress toward the computation of the $\pi^0$, $\eta$ and $\eta^{\prime}$ transition form factors using staggered quarks on $N_f=2+1+1$ gauge ensembles generated by the Budapest-Marseille-Wuppertal collaboration. These form factors are essential ingredients to evaluate the pseudoscalar-pole contributions to the hadronic light-by-light scattering in the muon $g-2$. Preliminary results for the pseudoscalar-pole contributions are presented, at finite lattice spacing, for all three light mesons.

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Antoine Gérardin, Jana N. Guenther, Lukas Varnhorst, Willem E. A. Verplanke. 2022-11-08. Pseudoscalar transition form factors and the hadronic light-by-light contribution to the muon $g-2$. https://arxiv.org/abs/2211.04159

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