{"paper":{"title":"Rare FCNC radiative leptonic decays $B\\to\\gamma\\ell^+\\ell^-$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anastasiia Kozachuk, Dmitri Melikhov, Nikolai Nikitin","submitted_at":"2017-10-07T18:46:59Z","abstract_excerpt":"We present our recent results for long-distance QCD effects in the FCNC radiative leptonic decays $B\\to\\gamma\\ell^+\\ell^-$, $\\ell=\\{e,\\mu\\}$. One encounters here two distinct types of long-distance effects: those encoded in the $B\\to\\gamma$ transition form factors induced by the $b\\to q$ quark currents, and those related to the charm-loop effects. We calculate the $B\\to\\gamma$ form factors in a broad range of the momentum transfers making use of the relativisitc dispersion approach based on the constituent quark picture which has proven to provide reliable predictions for many weak-transition "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.02719","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"}