REVIEW 9 cited by
A new bound on the electron's electric dipole moment
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
abstract
The Standard Model cannot explain the dominance of matter over anti-matter in our universe. This imbalance indicates undiscovered physics that violates combined CP symmetry. Many extensions to the Standard Model seek to explain the imbalance by predicting the existence of new particles. Vacuum fluctuations of the fields associated with these new particles can interact with known particles and make small modifications to their properties; for example, particles which violate CP symmetry will induce an electric dipole moment of the electron (eEDM). The size of the induced eEDM is dependent on the masses of the new particles and their coupling to the Standard Model. To date, no eEDM has been detected, but increasingly precise measurements probe new physics with higher masses and weaker couplings. Here we present the most precise measurement yet of the eEDM using electrons confined inside molecular ions, subjected to a huge intra-molecular electric field, and evolving coherently for up to 3 s. Our result is consistent with zero and improves on the previous best upper bound by a factor $\sim2.4$. Our sensitivity to $10^{-19}$ eV shifts in molecular ions provides constraints on broad classes of new physics above $10^{13}$ eV, well beyond the direct reach of the LHC or any other near- or medium-term particle collider.
Forward citations
Cited by 9 Pith papers
-
The flavour of SU(15) composite quarks and leptons
A hand-imposed hierarchical texture for two flavour spurions fits the SM quark/lepton masses and CKM, and the same spurions make the electron EDM and K0-Kbar0 mixing the strongest probes of the SU(15) preon scale.
-
Full Three-Loop Electroweak Multiplet Contributions to the Electron Electric Dipole Moment
The full three-loop electron EDM from CP-violating SU(2)_L multiplet Yukawa interactions is exactly three times larger (at leading order) than the electroweak-Weinberg operator contribution alone.
-
Correlating Resonant Di-Higgs and Tri-Higgs Production to $H\to VV$ in the 2HDM
In the decoupling limit of the 2HDM, a heavy Higgs boson's decays to two Higgs bosons and to Z/W pairs are predicted to have a fixed ratio of about 9.5, independent of Yukawa and scalar-potential parameters.
-
The String Theory Photoverse
Massless string-theory hidden photons acquire dimension-six dipole couplings to SM fermions with suppression scale Λ = αM_s, converting dipole measurements into constraints on the string scale.
-
Revisiting the Electron EDM in the NMSSM
Adding 2HDM-type two-loop diagrams to the NMSSM electron EDM calculation tightens constraints on the CP-violating phase phi4 and changes the allowed parameter space for phi3, phi4, and phi5.
-
Vacuum Instability and False Vacuum Decay Induced by Domain Walls in the N2HDM
Domain walls in the N2HDM can erase the barrier around the electroweak vacuum, making long-lived metastable vacua decay classically and excluding parameter points previously considered viable.
-
Induced Couplings and Causal Bounds from Nondegenerate Dirac Lagrangians
Minimal Legendre-regular null deformations of the Dirac Lagrangian induce Pauli dipole operators after U(1) gauging and exclude pure axial/trace torsion plus pure Weyl/second-trace nonmetricity by the Velo–Zwanziger c...
-
Updated analysis of minimal supersymmetric SO(10) with a universal soft spectrum
Minimal SUSY SO(10) with a universal soft spectrum survives only in a narrow mini-split region m0 ≳ 7.7 TeV and tanβ ≲ 9 under simultaneous proton-decay, Higgs-mass, and unification constraints.
-
BSM: Extended Scalar Sectors
An updated review chapter on extended scalar sectors, their constraints, dark matter and CP violation links, and future collider searches.
Discussion (0). Sign in to comment.