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12 papers
Vacuum polarization in QED with an electromagnetic background from the lattice
En-Hung Chao
We propose a framework to determine the vacuum polarization functions in QED in the presence of an electromagnetic background field in the spacelike region on the lattice. This met…
Long-distance contributions to kaon decays on the lattice
En-Hung Chao
In the past decades, significant improvements have been made on standard-model predictions on kaon decays using lattice quantum chromodynamics. In these proceedings, I review selec…
Computing the UV-finite electromagnetic corrections to the hadronic vacuum polarization in the muon from lattice QCD
Julian Parrino, Volodymyr Biloshytskyi, En-Hung Chao +2
In order to reach a precision of on the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon, , such that the full Standard…
Coordinate-space calculation of QED corrections to the hadronic vacuum polarization contribution to
En-Hung Chao, Harvey B. Meyer, Julian Parrino
As several lattice collaborations agree on the result for the window quantity of the hadronic vacuum polarization (HVP) contribution to , whilst being in tension with the…
Coordinate-space calculation of the window observable for the hadronic vacuum polarization contribution to
En-Hung Chao, Harvey B. Meyer, Julian Parrino
The `intermediate window quantity' of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon allows for a high-precision comparison between the…
Hadronic light-by-light scattering contribution to the muon from lattice QCD: semi-analytical calculation of the QED kernel
Nils Asmussen, En-Hung Chao, Antoine Gérardin +4
Hadronic light-by-light scattering is one of the virtual processes that causes the gyromagnetic factor of the muon to deviate from the value of two predicted by Dirac's theory.…
Forward light-by-light scattering and electromagnetic correction to hadronic vacuum polarization
Volodymyr Biloshytskyi, En-Hung Chao, Antoine Gérardin +5
Lattice QCD calculations of the hadronic vacuum polarization (HVP) have reached a precision where the electromagnetic (e.m.) correction can no longer be neglected. This correction…
The charm-quark contribution to light-by-light scattering in the muon from lattice QCD
En-Hung Chao, Renwick J. Hudspith, Antoine Gérardin +2
We compute the hadronic light-by-light scattering contribution to the muon from the charm quark using lattice QCD. The calculation is performed on ensembles generated with dy…
Hadronic light-by-light contribution to from lattice QCD: a complete calculation
En-Hung Chao, Renwick J. Hudspith, Antoine Gérardin +3
We compute the hadronic light-by-light scattering contribution to the muon from the up, down, and strange-quark sector directly using lattice QCD. Our calculation features ev…
Hadronic light-by-light contribution to from lattice QCD with SU(3) flavor symmetry
En-Hung Chao, Antoine Gérardin, Jeremy R. Green +2
We perform a lattice QCD calculation of the hadronic light-by-light contribution to at the SU(3) flavor-symmetric point MeV. The representation used…
The anomalous magnetic moment of the muon in the Standard Model
T. Aoyama, N. Asmussen, M. Benayoun +129
We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure con…
Developments in the position-space approach to the HLbL contribution to the muon on the lattice
Nils Asmussen, En-Hung Chao, Antoine Gérardin +4
The measurement of the anomalous magnetic moment of the muon and its prediction allow for a high-precision test of the Standard Model (SM). In this proceedings article we present o…