PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Pseudoscalar transition form factors and the hadronic light-by-light contribution to the muon g-2
W. Verplanke*, A. Gérardin, J. Guenther, L. Varnhorst and  Budapest-Marseille-Wuppertal Collaboration
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Pre-published on: May 16, 2022
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Abstract
We present preliminary results from our calculation of the pseudoscalar transition form factors of the $\eta$ and $\eta'$ mesons using staggered quarks on $N_f=2+1+1$ gauge ensembles generated by the Budapest-Marseille-Wuppertal collaboration. These transition form factors are an important input for the hadronic light-by-light contribution to the muon $(g-2)$. We first elaborate on the extraction of the masses of the $\eta$ and $\eta'$ mesons, that mix under the dynamics of QCD. Thereafter, we show our preliminary results for the pseudoscalar transition form factors, focusing on the $\eta$ meson in the absence of mixing.
DOI: https://doi.org/10.22323/1.396.0592
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