{"paper":{"title":"Measuring the Breaking of Lepton Flavour Universality in $B\\to K^*\\ell^+\\ell^-$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Danny van Dyk, Nicola Serra, Rafael Silva Coutinho","submitted_at":"2016-10-27T13:18:29Z","abstract_excerpt":"We propose measurements of weighted differences of the angular observables in the rare decays $B \\to K^*\\ell^+\\ell^-$. The proposed observables are very sensitive to the difference between the Wilson coefficients $\\mathcal{C}_9^{(e)}$ and $\\mathcal{C}_9^{(\\mu)}$ for decays into electrons and muons, respectively. At the same time, the charm-induced hadronic contributions are kinematically suppressed to $\\lesssim 7\\% (4\\%)$ in the region $1\\,$GeV$^2 \\leq q^2 \\leq 6\\,$GeV$^2$, as long as LFU breaking occurs only in $\\mathcal{C}^{(\\ell)}_{9}$. This suppression becomes stronger for the region of lo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08761","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"}