Theoretical Aspects of Radium-Containing Molecules Amenable to Assembly from Laser-Cooled Atoms for New Physics Searches

Abstract

We explore the possibilities for a next-generation electron-electric-dipole-moment experiment using ultracold heteronuclear diatomic molecules assembled from a combination of radium and another laser-coolable atom. In particular, we calculate their ground state structure and their sensitivity to parity- and time-reversal ($\mathcal{P},\mathcal{T}$) violating physics arising from flavor-diagonal charge-parity ($\mathcal{C}\mathcal{P}$) violation. Among these species, the largest $\mathcal{P},\mathcal{T}$-violating molecular interaction constants -- associated for example with the electron electric dipole moment -- are obtained for the combination of radium (Ra) and silver (Ag) atoms. A mechanism for explaining this finding is proposed. We go on to discuss the prospects for an electron EDM search using ultracold, assembled, optically trapped RaAg molecules, and argue that this system is particularly promising for rapid future progress in the search for new sources of $\mathcal{C}\mathcal{P}$ violation.

arXiv commentAdded reference [6]; Created subsubsections "Trends'' and "Comparison of Models and with the Literature''; Reference [36] (now reference [37]) corrected; Formatting errors for molecules in references fixed

References in corpus (43)

• Quantum metrology with nonclassical states of atomic ensembles
• Search for New Physics with Atoms and Molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Production of cold molecules via magnetically tunable Feshbach resonances
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• The origin of the matter-antimatter asymmetry
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Flavour physics of leptons and dipole moments
• Reduced Limit on the Permanent Electric Dipole Moment of ${}^{199}$Hg
• The DIRAC code for relativistic molecular calculations
• A Fermi Degenerate Gas of Polar Molecules
• Precision Measurement of Time-Reversal Symmetry Violation with Laser-Cooled Polyatomic Molecules
• New frontiers with quantum gases of polar molecules
• Lasercooled RaF as a promising candidate to measure molecular parity violation
• Time-Reversal-Based Quantum Metrology with Many-Body Entangled States
• Laser-trapping of Ra-225 and Ra-226 with repumping by room temperature blackbody radiation
• Second-Scale Nuclear Spin Coherence Time of Trapped Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Ultracold RbSr molecules can be formed by magnetoassociation
• Creation of ultracold Sr2 molecules in the electronic ground state
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Rotational Coherence Times of Polar Molecules in Optical Tweezers
• Ab initio study of radium monofluoride, RaF, as a candidate to search for P- and T,P- violation effects
• Electron affinity of Li: A state-selective measurement
• Magnetically tunable Feshbach resonances in ultracold Li-Yb mixtures
• Three-dimensional Doppler, polarization-gradient, and magneto-optical forces for atoms and molecules with dark states
• Quark level and hadronic contributions to the electric dipole moment of charged leptons in the standard model
• Methods for measuring the electron EDM using ultracold YbF molecules
• Electron EDM searches based on alkali or alkaline earth bearing molecules
• Feshbach resonances in $p$-wave three-body recombination within Fermi-Fermi mixtures of open-shell ${}^6$Li and closed-shell ${}^{173}$Yb atoms
• Highly polar molecules consisting of a copper or silver atom interacting with an alkali-metal or alkaline-earth-metal atom
• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Efficient production of long-lived ultracold Sr${}_2$ molecules
• Low Energy Probes of Physics Beyond the Standard Model
• Production of ultracold Cs*Yb molecules by photoassociation
• TaN, a molecular system for probing $\mathcal{P},\mathcal{T}$-violating hadron physics
• Merits of Heavy-Heavy Molecules for Electron Electric Dipole Moment Searches
• Time keeping and searching for new physics using metastable states of Cu, Ag and Au
• Laser control of ultracold molecule formation: The case of RbSr
• Proposal for the formation of ultracold deeply-bound RbSr dipolar molecules by all-optical methods
• Relations between matrix elements of different weak interactions and interpretation of the PNC and EDM measurements in atoms and molecules
• P,T-Odd Interactions in Atomic ${}^{129}$Xe and Phenomenological Applications
• Robust storage qubits in ultracold polar molecules

Cited by in corpus (1)

• Standard Model prediction for paramagnetic EDMs