Publication: Dispersion relations for hadronic light-by-light scattering in triangle kinematics
Dispersion relations for hadronic light-by-light scattering in triangle kinematics
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Lüdtke, J., Procura, M., & Stoffer, P. (2023). Dispersion relations for hadronic light-by-light scattering in triangle kinematics. Journal of High Energy Physics, 2023(4), 125. https://doi.org/10.1007/jhep04(2023)125
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We present a new strategy for the dispersive evaluation of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon a${μ}$. The new approach directly applies in the kinematic limit relevant for a${μ}$: one of the photons is treated as an external electromagnetic field with vanishing momentum, so that the kinematics corresponds to a triangle. We derive expressions for the relevant single-particle intermediate states, as well as the tensor decompositions of the two-pion sub-processes that appear in additio
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- Lüdtke, Jan
- Procura, Massimiliano
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Lüdtke, J., Procura, M., & Stoffer, P. (2023). Dispersion relations for hadronic light-by-light scattering in triangle kinematics. Journal of High Energy Physics, 2023(4), 125. https://doi.org/10.1007/jhep04(2023)125
