{"paper":{"title":"Correlations between D and $\\bar{D}$ mesons produced in 500 GeV/c $\\pi^-$-nucleon interactions","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"E. M. Aitala, et al","submitted_at":"1998-09-28T18:21:08Z","abstract_excerpt":"We present a study of correlations between D and $\\bar{D}$ mesons produced in 500 GeV/$c$ $\\pi^-$-nucleon interactions, based on data from experiment E791 at Fermilab. We have fully reconstructed $791 \\pm 44$ charm meson pairs to study correlations between the transverse and longitudinal momenta of the two D mesons and the relative production rates for different types of D meson pairs. We see slight correlations between the longitudinal momenta of the D and the $\\bar D$, and significant correlations between the azimuthal angle of the D and the $\\bar D$. The experimental distributions are compa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9809029","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"}