Journal
PHYSICAL REVIEW LETTERS
Volume 122, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.192001
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Funding
- DFG [FOR 1873]
- MIUR-PRIN Project [2010YJ2NYW, FP10 ITN Elusives (H2020-MSCA-ITN-2015-674896)]
- Invisibles-Plus [H2020-MSCA-RISE-2015-690575]
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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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