{"paper":{"title":"Vector mesons leading-twist longitudinal distribution amplitudes and related semi-leptonic decays within QCD sum rules","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ru-Meng Pan, Tao Zhong, Wan-Bing Luo, Ya-Xiong Wang","submitted_at":"2026-07-20T03:01:29Z","abstract_excerpt":"In this work, we focus on the light vector meson leading-twist longitudinal distribution amplitudes (DAs) $\\phi^\\parallel_{2;V}(x,\\mu)$ with $V = \\rho, K^\\ast, \\phi$. In order to obtain their accurate behaviors, a new scheme of QCD sum rule research with respect to DA suggested in 2021 by us is adopted. With an improved sum rule formula, the $\\xi$-moments $\\langle\\xi^n\\rangle_{2;V}^\\parallel$ up to tenth order are calculated. In which, $\\langle\\xi^2\\rangle^\\parallel_{2;\\rho}=0.225^{+0.013}_{-0.012}$, $\\langle\\xi^1\\rangle^\\parallel_{2;K^\\ast}=-0.0228^{+0.0042}_{-0.0040}$, $\\langle\\xi^2\\rangle^\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.17496","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.17496/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}