{"paper":{"title":"Role of the non-resonant background in the $\\rho^0$-meson diffractive electro- and photoproproduction","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M.G.Ryskin, St.Petersburg), Yu.M.Shabelski (Petersburg Nuclear Physics Institute Gatchina","submitted_at":"1997-01-29T11:12:42Z","abstract_excerpt":"The background due to the direct diffractive dissociation of the photon into the $\\pi^+\\pi^-$-pair to the \"elastic\" diffractive $\\rho^0$-meson production in electron-proton collisions is calculated. The amplitude for the background process $\\gamma p \\to \\pi^+ \\pi^- p$ is proportional to the $\\pi$-meson - proton cross section. Therefore, describing the HERA data, we can estimate $\\sigma (\\pi p)$ at energy $s_{\\pi p}\\sim (2 - 3) \\times 10^{3}$ GeV$^2$ that is considerably higher the existing data. At large $Q^2$ the interference between resonant and non-resonant $\\pi^+ \\pi^-$ production leads al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9701407","kind":"arxiv","version":1},"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"}