{"paper":{"title":"Relativistic Flux Tube Model Calculation of the Isgur-Wise Function","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. G. Olsson, S. Veseli","submitted_at":"1994-10-07T20:11:44Z","abstract_excerpt":"The Relativistic Flux Tube model is used to calculate of the Isgur-Wise functions describing the exclusive semileptonic decays of $\\bar{B}$ and $\\bar{B}_{s}$ mesons. The light quark mass dependence is investigated and the predicted universal function agrees well with the results of lattice simulations, and with the experimental data. Recent experimental measurements of the $\\bar{B}\\ra D^{*}l\\bar{\\nu}_{l}$ decay distribution yield the CKM element $V_{bc}=0.035\\pm 0.001$. The IW function slope and second derivative at the zero recoil point are predicted to be $\\xi'(1) = -0.93\\pm 0.04$ and $\\xi''"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9410249","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"}