{"id":"73059482-edf6-427f-aea2-eba7a1f8a9fa","arxiv_id":"1908.00376","paper_version":2,"verdict":"CONDITIONAL","confidence":"MODERATE","novelty_score":6.0,"correctness_risk":"medium","formal_verification":"none","parameter_count":5,"one_line_summary":"A missing-mass search in semileptonic B decays at Belle II could constrain or discover GeV-scale sterile neutrinos, with sensitivity comparable to or better than upgraded LHCb for masses below 2 GeV.","lead":"This paper proposes using B→DμN decays, where the heavy neutrino N escapes undetected, to search for sterile neutrinos at Belle II. The missing mass of the Dμ pair would show a peak at the sterile neutrino mass, allowing constraints on the mixing parameter |U_μN|^2.","discovery_kind":"new_application","skeptic_critique":null,"referee_report":null,"author_rebuttal":null,"desk_editor":null,"rs_alignment":null,"lean_confirmation":null,"pith_extraction":null,"created_at":"2026-08-14T15:59:59.107677+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":null,"supporting_citations":[],"review_version":1}