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arXiv · 2212.12031

Calculating the QED correction to the hadronic vacuum polarisation on the lattice

Gaurav Ray·Alexei Bazavov·Christine Davies·Carleton DeTar·Aida El-Khadra·Steven Gottlieb·Daniel Hatton·Hwancheol Jeong·Andreas Kronfeld·Shaun Lahert·Peter Lepage·Craig McNeile·James Simone·Alejandro Vaquero Avilés-Casco
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Abstract

Isospin-breaking corrections to the hadron vacuum polarization component of the anomalous magnetic moment of the muon are needed to ensure the theoretical precision of $g_\mu -2$ is below the experimental precision. We describe the status of our work calculating, using lattice QCD, the QED correction to the light and strange connected hadronic vacuum polarization in a Dashen scheme. We report results using physical $N_f=2+1+1$ HISQ ensembles at three lattice spacings and three heavier-than-light valence quark masses.

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Gaurav Ray, Alexei Bazavov, Christine Davies, Carleton DeTar, Aida El-Khadra, Steven Gottlieb, Daniel Hatton, Hwancheol Jeong, Andreas Kronfeld, Shaun Lahert, Peter Lepage, Craig McNeile, James Simone, Alejandro Vaquero Avilés-Casco. 2022-12-22. Calculating the QED correction to the hadronic vacuum polarisation on the lattice. https://arxiv.org/abs/2212.12031

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