{"paper":{"title":"Effective Valence Quark Model and a Possible Dip in $d Br(B \\to K \\ell \\bar{\\ell})/dq^2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Hiroyuki Ishida, Yoshio Koide","submitted_at":"2013-05-31T09:51:25Z","abstract_excerpt":"In rare $B$ meson decays $B\\rightarrow K \\ell^+ \\ell^-$, a possible contribution of $\\ell^+\\ell^-$ emission via photon from the \"spectator\" quark $q$ ($q=u,d$) in the $B$ meson $(q\\bar{b})$ is investigated in addition to the conventional one $\\bar{b} \\rightarrow \\bar{s} +\\gamma \\rightarrow \\bar{s}+\\ell^+ + \\ell^-$. If such a contribution is sizable compared with the standard estimation of $B\\rightarrow K \\ell^+ \\ell^-$, we will observe visible difference between $d \\Gamma(B^0\\rightarrow K^0 \\ell^+ \\ell^-)/d q^2$ and $d \\Gamma(B^+\\rightarrow K^+ \\ell^+ \\ell^-)/d q^2$ in $q^2$ dependence ($q^2 \\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.7342","kind":"arxiv","version":4},"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"}