Speaker
Description
Semi-inclusive hadron production in deep-inelastic lepton-nucleon scattering (SIDIS) is an important probe of the quark flavor structure of the nucleon and of the fragmentation dynamics of quarks into hadrons. In case of longitudinally polarized beams, SIDIS is a powerful tool for resolving the quark flavor decomposition of the proton’s spin structure. I report on the recent calculation of the full next-to-next-to-leading order (NNLO) QCD corrections to the coefficient functions for SIDIS in analytical form. The numerical impact of these corrections for precision physics is illustrated by a detailed phenomenological analysis, by comparison with data from previous experiments and with predictions for the future Electron-Ion Collider (EIC), where SIDIS will represent a key process.
