{"paper":{"title":"QCD Compositeness as Revealed in Exclusive Vector Boson Reactions through Double-Photon Annihilation: $e^+ e^- \\to \\gamma \\gamma^\\ast \\to \\gamma V^0 $ and $e^+ e^- \\to \\gamma^\\ast \\gamma^\\ast \\to V^0 V^0$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Richard F. Lebed, Stanley J. Brodsky, Valery E. Lyubovitskij","submitted_at":"2016-09-21T16:54:38Z","abstract_excerpt":"We study the exclusive double-photon annihilation processes, $e^+ e^- \\to \\gamma \\gamma^\\ast\\to \\gamma V^0$ and $e^+ e^- \\to \\gamma^\\ast \\gamma^\\ast \\to V^0_a V^0_b,$ where the $V^0_i$ is a neutral vector meson produced in the forward kinematical region: $s \\gg -t$ and $-t \\gg \\Lambda_{\\rm QCD}^2$. We show how the differential cross sections $\\frac{d\\sigma}{dt}$, as predicted by QCD, have additional falloff in the momentum transfer squared $t$ due to the QCD compositeness of the hadrons, consistent with the leading-twist fixed-$\\theta_{\\rm CM} $ scaling laws. However, even though they are excl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.06635","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"}