{"paper":{"title":"Generalised helicity formalism, higher moments and the $B \\to K_{J_K}(\\to K \\pi) \\bar{\\ell}_1 \\ell_2$ angular distributions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"James Gratrex, Markus Hopfer, Roman Zwicky","submitted_at":"2015-06-12T10:27:32Z","abstract_excerpt":"We generalise the Jacob-Wick helicity formalism, which applies to sequential decays, to effective field theories of rare decays of the type $B \\to K_{J_K}(\\to K \\pi) \\bar{\\ell}_1 \\ell_2$. This is achieved by reinterpreting local interaction vertices $\\bar b \\Gamma'_{\\mu_1 ..\\mu_n} s \\bar \\ell \\Gamma^{\\mu_1 ..\\mu_n} \\ell$ as a coherent sum of $1 \\to 2$ processes mediated by particles whose spin ranges between zero and $n$. We illustrate the framework by deriving the full angular distributions for $B \\to K\\bar{\\ell}_1 \\ell_2$ and $B \\to K^*(\\to K \\pi) \\bar{\\ell}_1 \\ell_2$ for the complete dimens"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.03970","kind":"arxiv","version":3},"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/1506.03970/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"}