scholarly journals Recent progress in hadronic light-by-light scattering

2022 ◽  
Vol 258 ◽  
pp. 06004
Author(s):  
Martin Hoferichter
Keyword(s):  
Light Scattering ◽  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Recent Progress ◽  
Data Driven ◽  
Significant Progress

In recent years, significant progress in the calculation of the HLbL contribution to the anomalous magnetic moment of the muon has been achieved both with data-driven methods and in lattice QCD. In these proceedings I will discuss current developments aimed at controlling HLbL scattering at the level of 10%, as required for the final precision of the Fermilab E989 experiment.

scholarly journals Hadronic light-by-light scattering in the muon g − 2

2019 ◽  
Vol 218 ◽  
pp. 01001
Author(s):  
Andreas Nyffeler
Keyword(s):  
Light Scattering ◽  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Current Status ◽  
Reliable Estimate ◽  
Model Calculations ◽  
Recent Developments ◽  
Model Independent ◽  
Scattering Contribution

We briefly review the current status of the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon. Based on various model calculations in the literature, we obtain the estimate $ \mathop a\nolimits_\mu ^{HLbL} = (102 \pm 39) \times \mathop {10}\nolimits^{ - 11} $. Recent developments including more model-independent approaches using dispersion relations and lattice QCD, that could lead to a more reliable estimate, are also discussed.

scholarly journals Hadronic Light-by-Light Scattering Contribution to the Muon Anomalous Magnetic Moment from Lattice QCD

2020 ◽  
Vol 124 (13) ◽  
Author(s):  
Thomas Blum ◽  
Norman Christ ◽  
Masashi Hayakawa ◽  
Taku Izubuchi ◽  
Luchang Jin ◽  
...  
Keyword(s):  
Light Scattering ◽  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Muon Anomalous Magnetic Moment ◽  
Scattering Contribution

scholarly journals Hadronic light-by-light scattering in the anomalous magnetic moment of the muon

2019 ◽  
Author(s):  
Nils Asmussen ◽  
Antoine Gerardin ◽  
Andreas Nyffeler ◽  
Harvey B. Meyer
Keyword(s):  
Light Scattering ◽  
Standard Model ◽  
Model Prediction ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Recent Progress ◽  
Standard Model Prediction ◽  
New Physics ◽  
The Standard Model ◽  
Discovery Potential

Hadronic light-by-light scattering in the anomalous magnetic moment of the muon a_\muaμ is one of two hadronic effects limiting the precision of the Standard Model prediction for this precision observable, and hence the new-physics discovery potential of direct experimental determinations of a_\muaμ. In this contribution, I report on recent progress in the calculation of this effect achieved both via dispersive and lattice QCD methods.

Hadronic Contributions to the Anomalous Magnetic Moment of the Muon from Lattice QCD

2021 ◽  
pp. 89-100
Author(s):  
M. Cè ◽  
A. Gérardin ◽  
G. von Hippel ◽  
B. Hörz ◽  
H. B. Meyer ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment

scholarly journals Lattice QCD and the anomalous magnetic moment of the muon

2019 ◽  
Vol 104 ◽  
pp. 46-96 ◽  
Author(s):  
Harvey B. Meyer ◽  
Hartmut Wittig
Keyword(s):  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment

Hadronic Contributions to the Anomalous Magnetic Moment of the Muon from Lattice QCD

2021 ◽  
pp. 5-19
Author(s):  
M. Cè ◽  
A. Gérardin ◽  
G. von Hippel ◽  
B. Hörz ◽  
R. J. Hudspith ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment

scholarly journals Dispersive analysis of light-meson transition form factors

2019 ◽  
Vol 218 ◽  
pp. 03001
Author(s):  
Bastian Kubis
Keyword(s):  
Light Scattering ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Form Factors ◽  
Experimental Information ◽  
Light Meson ◽  
Transition Form ◽  
Dispersive Analysis

We discuss status and prospects of a dispersive analysis of the π0, η, and η ′ transition form factors. Particular focus is put on the various pieces of experimental information that serve as input to such a calculation. These can help improve on the precision of an evaluation of the light pseudoscalar pole contributions to hadronic light-by-light scattering in the anomalous magnetic moment of the muon.**

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