{"work":{"id":"cd2a4cca-5b61-4cf2-aec2-060dc6152c64","openalex_id":null,"doi":null,"arxiv_id":"1503.05534","raw_key":null,"title":"$B\\to V\\ell^+\\ell^-$ in the Standard Model from Light-Cone Sum Rules","authors":null,"authors_text":"A","year":2015,"venue":"hep-ph","abstract":"We present $B_q\\to\\rho$, $B_q\\to\\omega$, $B_q\\to K^*$, $B_s\\to K^*$ and $B_s\\to \\phi$ form factors from light-cone sum rules (LCSR) at $\\mathcal{O}(\\alpha_s)$ for twist-2 and 3 and $\\mathcal{O}(\\alpha_s^0)$ for twist-4 with updated hadronic input parameters. Three asymptotic light-cone distribution amplitudes of twist-$4$ (and $5$) are determined, necessary for the form factors to obey the equations of motion. It is argued that the latter constrain the uncertainty of tensor-to-vector form factor ratios thereby improving the prediction of zeros of helicity amplitudes of major importance for $B\\to K^*\\ell\\ell$ angular observables. We provide easy-to-use fits to the LCSR results, including the full error correlation matrix, in all modes at low $q^2$ as well as combined fits to LCSR and lattice results covering the entire kinematic range for $B_q\\to K^*$, $B_s\\to K^*$ and $B_s\\to \\phi$. The error correlation matrix avoids the problem of overestimating the uncertainty in phenomenological applications. Using the new form factors and recent computations of non-factorisable contributions we provide Standard Model predictions for $B\\to K^*\\gamma$ as well as $B\\to K^*\\ell^+\\ell^-$ and $B_s\\to\\phi\\mu^+\\mu^-$ at low dilepton invariant mass. Employing our $B \\to (\\rho,\\omega) $ form factor results we extract the CKM element $|V_\\mathrm{ub}|$ from the semileptonic decays $B\\to(\\rho,\\omega) \\ell\\nu$ and find good agreement with other exclusive determinations.","external_url":"https://arxiv.org/abs/1503.05534","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-25T03:55:20.007761+00:00","pith_arxiv_id":"1503.05534","created_at":"2026-05-11T02:45:57.386296+00:00","updated_at":"2026-05-25T03:55:20.007761+00:00","title_quality_ok":true,"display_title":"Bharucha, D.M","render_title":"Bharucha, D.M"},"hub":{"state":{"work_id":"cd2a4cca-5b61-4cf2-aec2-060dc6152c64","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":14,"external_cited_by_count":null,"distinct_field_count":2,"first_pith_cited_at":"2025-06-25T13:53:00+00:00","last_pith_cited_at":"2026-05-22T15:31:43+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-05-31T21:32:52.861945+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":3}],"polarity_counts":[{"context_polarity":"background","n":3}],"runs":{},"summary":{},"graph":{},"authors":[]}}