{"paper":{"title":"Investigations of Azimuthal Asymmetry in Semi-Inclusive Leptoproduction","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Frascati), H.R. Avakian, K.A. Oganessyan, N. Bianchi, P. Di Nezza (LNF-INFN","submitted_at":"1997-09-15T14:30:40Z","abstract_excerpt":"We consider the azimuthal asymmetries in semi-inclusive deep inelastic leptoproduction arising due to both perturbative and nonperturbative effects at HERMES energies and show that the $k_T^2/Q^2$ order corrections to $< \\cos\\phi >$ and $< \\cos2\\phi >$ are significant. We also reconsider the results of perturbative effects for $< \\cos\\phi >$ at large momentum transfers \\cite{A1} using the more recent sets of scale-dependent distribution and fragmentation functions, which bring up to $18{%}$ difference in $< \\cos\\phi >$. In the same approach we calculate the $< \\cos2\\phi >$ as well."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9709342","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}