{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"21e427f6852fcc2b9b303acae05624d65ef08a8521197f763631cc6b2ccb238d","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["060f9b067dc7d96684d30cb0773f7e3f032456842fe1ad897eeab1b402e2a466","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"d6955804b72028c6376f14f7f377d20b00848be3ce5480b74e6f2141201fbac4","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"amo.electric-dipole-moments.electron-edm","kind":"well-posed","literature_status":"open","n":"2","parents":[],"plain":"No electron dipole has been seen down to 4 parts in $10^{30}$ of an electron charge times a centimeter. Next-generation molecule experiments aim to look ten times deeper, where many theories with new heavy particles predict a signal.","posed_since":"","precise":"Current bound $\\mid d_{e}\\mid < 4.1 \\times 10^{-30}\\,e\\,\\mathrm{cm}$ (90% CL, JILA HfF+, 2023), with the Standard Model contribution many orders smaller. Determine whether $d_{e}$ (or the equivalent electron-nucleon coupling $C_{\\mathrm{S}}$) is nonzero at the $10^{-31}\\,e\\,\\mathrm{cm}$ level using polar molecules (ThO, ThF+, YbOH, BaF or others).","problem_ref":"060f9b067dc7d96684d30cb0773f7e3f032456842fe1ad897eeab1b402e2a466","references":"","settled_by":"A molecular EDM measurement with statistical and systematic uncertainty near $10^{-31}$ e cm, confirmed in a second species.","status_note":"JILA's third-generation ThF+ experiment and ACME III (ThO) report progress toward roughly $10^{-31}$ e cm sensitivity as of 2026.","title":"Is the electron EDM nonzero above $10^{-31}$ e 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