2002/11/01 by Lorenzo Magnea, Magnea, Lorenzo
Decision Sciences · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Scientific Computing and Data Management #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0211013
15 pages, no figures. Invited talk at the XIV Italian Meeting on High Energy Physics, Parma, April 2002. Extended version
arxiv created 2002/11/01 · openalex publication_date 2002/11/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent work on the theme of power corrections in perturbative QCD is briefly reviewed, with an emphasis on event shapes in e+ e- annihilation. The factorization of soft gluon effects is the main tool: it leads to resummation, and thus highlights the limitations of perturbation theory, pointing to nonperturbative corrections whose size can be estimated. Power corrections can be resummed into shape functions, for which QCD--based models are available. Theoretical progress is closing in on the nonperturbative frontier.