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Muon-Electron Scattering at Next-To-Next-To-Leading Order: The Hadronic Corrections. | LitMetric

Muon-Electron Scattering at Next-To-Next-To-Leading Order: The Hadronic Corrections.

Phys Rev Lett

Istituto Nazionale Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy.

Published: May 2019

The standard model prediction for muon-electron scattering beyond leading order requires the inclusion of QCD contributions which cannot be computed perturbatively. At next-to- and next-to-next-to-leading order, they arise from one- and two-loop diagrams with hadronic vacuum polarization insertions in the photon propagator. We present their evaluation using the dispersive approach with hadronic e^{+}e^{-} annihilation data and estimate their uncertainty. We find that these corrections are crucial for the analysis of future high-precision muon-electron scattering data, like those of the recently proposed MUonE experiment at CERN.

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http://dx.doi.org/10.1103/PhysRevLett.122.192001DOI Listing

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