Speaker
Werner Vogelsang
(University of Tübingen)
Description
We determine approximate next-to-next-to-leading order (NNLO) corrections to unpolarized and polarized semi-inclusive DIS. They are derived using the threshold resummation formalism, which we fully develop to next-to-next-to-leading logarithmic (NNLL) accuracy, including the two-loop hard factor. In terms of the customary SIDIS variables x and z they include all double distributions in the partonic variables. Our numerical estimates suggest much significance of the approximate NNLO terms, along with a reduction in scale dependence.
Primary author
Werner Vogelsang
(University of Tübingen)
