{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"3dac9a8961bcd88a7be731ff1cea7c9172e33784e41bed067bad11f6419316e5","created":"2026-10-03T07:18:05Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"59f9107842e615f950678019c90cac66b3f0f8a2f4b67e19f24bffadbcb95283","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"hep.flavor-anomalies.b-s-mumu","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"After a well-known hint was withdrawn in 2022, some B decays to muon pairs still occur less often, or with different angular patterns, than predicted. Whether hard-to-compute strong-force effects explain this is disputed.","posed_since":"2013","precise":"Branching ratios of $B \\to K \\mu \\mu$ and $B_{s} \\to \\phi \\mu \\mu$ at low $q^{2}$ and the angular observable $P5'$ in $B \\to K* \\mu \\mu$ deviate from SM predictions by about 2 to 4 sigma, while $R_{K}$ and $R_{K}*$ agree with the SM (LHCb, 2022). Identify whether a shift in the Wilson coefficient $C_{9}$ is short-distance new physics or long-distance c-cbar loops.","problem_ref":null,"references":"","settled_by":"Data-driven determination of the $q^{2}$ dependence of non-local charm contributions from LHCb Run 3 and Belle II, combined with lattice form factors.","status_note":"","title":"Are $b \\text{ to } s \\mu \\mu$ tensions new physics or charm-loop effects?","topic_ref":"67e36a860662b77a3c30ab454eb65cfa879e6c2949ab905ac9b1ccef959fe797"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"8fd8a581feb0ef4e19d70aede78e9bb1986cf0a15aeb06daea9b01d09f18ec03","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"599427704d4749cb6e360ac6101437c7f6130149eb51f2f6ceabbfc480d4efc6","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"oj_xeL_83d-WO1sy4aeBAKgMl_s02poi2Kxzqp07PV-noLkWM8yrXgOx4fCeq92z29Bd80Tjn7TyWFC5WN1LBQ"},"schema":"pubphys.envelope/1"},"record_hash":"8fd8a581feb0ef4e19d70aede78e9bb1986cf0a15aeb06daea9b01d09f18ec03","leaf_index":1538}