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Title: Is the electron EDM nonzero above 1e-31 e cm?
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.
Precise: Current bound $\mid d_{e}\mid < 4.1e-30\,e\,\mathrm{cm}$ (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 $1e-31\,e\,\mathrm{cm}$ level using polar molecules (ThO, ThF+, YbOH, BaF or others).
Settled by: A molecular EDM measurement with statistical and systematic uncertainty near 1e-31 e cm, confirmed in a second species.
Kind: well-posed
Answer type: yes-no
References: (empty)
Literature status: open
Status note: JILA's third-generation ThF+ experiment and ACME III (ThO) report progress toward roughly 1e-31 e cm sensitivity as of 2026.
Posed since: (empty)