{"paper":{"title":"Pomeron in diffractive processes $\\gamma^*(Q^2)p\\to\\rho^0 p$ and $\\gamma^*(Q^2)p\\to\\gamma^*(Q^2) p$ at large Q^2: the onset of pQCD","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"D. I. Melikhov, L. G. Dakhno, M. G. Ryskin, V. A. Nikonov, V. V. Anisovich","submitted_at":"1999-02-16T09:50:23Z","abstract_excerpt":"We study the reactions $\\gamma^*(Q^2)p\\to\\rho^0 p$ and $\\gamma^*(Q^2)p\\to\\gamma^*(Q^2) p$ at large Q^2 and $W^2/Q^2$ and small momentum transfer, $\\kappa^2_\\perp$, to the nucleon where the pomeron exchange dominates. At large Q^2 the virtual photon selects a hard $q\\bar q$ pair, thus selecting the hard pomeron component (the BFKL pomeron). The amplitudes for both transverse and longitudinal polarizations of the initial photon and outgoing $\\rho$-meson (photon) are calculated in the framework of the BFKL pomeron exchange. Our calculations show that one cannot expect the early onset of the pure "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9902359","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"}