Polarized Semi-Inclusive Deep-Inelastic Scattering at Next-to-Next-to-Leading Order in QCD
Semi-inclusive hadron production in longitudinally polarized deep-inelastic lepton-nucleon scattering is a powerful tool for resolving the quark flavor decomposition of the proton's spin structure. We present the full next-to-next-to-leading order QCD corrections to the coefficient functions of polarized semi-inclusive deep-inelastic scattering (SIDIS) in analytical form, enabling the use of SIDIS measurements in precision studies of the proton spin structure. The numerical impact of these corrections is illustrated by a comparison with data of polarized single-inclusive hadron spectra from the DESY HERMES and CERN COMPASS experiments.
Authors
- Kay Schönwald (ORCID: https://orcid.org/0000-0002-2726-5434)
- Markus Löchner (ORCID: https://orcid.org/0009-0007-8717-1193)
- Giovanni Stagnitto (ORCID: https://orcid.org/0000-0002-9513-5914)
- T. Gehrmann (ORCID: https://orcid.org/0000-0001-7009-432X)
- Leonardo Bonino (ORCID: https://orcid.org/0009-0001-0759-488X)
Institutions
- University of Zurich (CH)
- University of Milano-Bicocca (IT)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2024-11-21
- DOI
- https://doi.org/10.1103/physrevlett.133.211904
- Citations
- 18
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 11.87
Funders
- National Science Foundation
- European Commission
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Horizon 2020 Framework Programme
- H2020 European Research Council