{"ID":23510316,"CreatedAt":"2026-09-18T02:21:44.056544415Z","UpdatedAt":"2026-09-18T02:21:44.056544415Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2609.19620","arxiv_id":"2609.19620","title":"Higher twists in QCD","abstract":"Higher twists in deep-inelastic scattering (DIS) and related hard scattering processes provide a unique window on nonperturbative QCD dynamics, encoding quark-gluon correlations and multiparton interactions beyond the leading-twist parton model. We present an overview of the theoretical foundations of higher twists in QCD, based on the operator product expansion, and discuss their intimate connection with quark-hadron duality in the transition between the resonance and scaling regimes. We review the phenomenology of higher-twist effects in unpolarized and polarized DIS, emphasizing their extraction from precision data through modern global QCD analyses that simultaneously determine both leading-twist parton distribution functions and higher-twist contributions. Finally, we discuss recent developments in the study of higher twists in semi-inclusive and exclusive reactions, and conclude by highlighting future opportunities to study QCD dynamics beyond leading twist at Jefferson Lab and the Electron-Ion Collider that promise to deepen our understanding of hadron structure.","short_abstract":"Higher twists in deep-inelastic scattering (DIS) and related hard scattering processes provide a unique window on nonperturbative QCD dynamics, encoding quark-gluon correlations and multiparton interactions beyond the leading-twist parton model. We present an overview of the theoretical foundations of higher twists in...","url_abs":"https://arxiv.org/abs/2609.19620","url_pdf":"https://arxiv.org/pdf/2609.19620v1","authors":"[\"W. Melnitchouk\"]","published":"2026-09-17T03:13:30Z","proceeding":"hep-ph","tasks":"[\"hep-ph\",\"hep-ex\",\"nucl-th\"]","methods":"[]","has_code":false}