NNLO QCD corrections to polarized semi-inclusive DIS
arxiv(2024)
摘要
Polarized semi-inclusive deep-inelastic scattering (SIDIS) is a key process
in the quest for a resolution of the proton spin puzzle. We present the
complete results for the polarized SIDIS process at next-to-next-to-leading
order (NNLO) in perturbative quantum chromodynamics. Our analytical results
include all partonic channels for the scattering of polarized leptons off
hadrons and a spin-averaged hadron identified in the final state. A numerical
analysis of the NNLO corrections illustrates their significance and the reduced
residual scale dependence in the kinematic range probed by the future
Electron-Ion-Collider EIC.
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