The Role of Gauge Invariance in Single-Spin Asymmetries
classification
✦ hep-ph
keywords
crossgaugeinvariancesectionsargueasymmetrieseffectfunctions
read the original abstract
We argue that through the Wilson lines, gauge invariance has as an effect that the hard functions in weighted spin-asymmetries in hadronic scattering processes are given by gluonic pole cross sections, rather than the usual partonic cross sections.
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