Article Dans Une Revue The European Physical Journal D : Atomic, molecular, optical and plasma physics Année : 2025

Semi-hadronic charge-parity violation interaction constants in CsAg, FrLi and FrAg molecules

Résumé

We present a systematic study of the nucleon-electron tensor-pseudotensor (Ne-TPT) interaction in candidate molecules for next-generation experimental searches for new sources of charge-parity violation. The considered molecules are all amenable to assembly from laser-cooled atoms, with the francium-silver (FrAg) molecule previously shown to be the most sensitive to the Schiff moment interaction in this set. Interelectron correlation effects are treated through relativistic general-excitation-rank configuration-interaction theory in the framework of the Dirac-Coulomb Hamiltonian. We find in FrAg the Ne-TPT interaction constant to be WT(Fr)=2.58±0.21[⟨Σ⟩AkHz], considering the Francium atom as target of the measurement. Taking into account nuclear structure in a multi-source interpretation of a measured electric dipole moment, FrAg is found to be an excellent probe of physics beyond the Standard Model as this system will in addition to its sizeable Ne-TPT interaction constant greatly constrain fundamental parameters such as the quantum-chromo-dynamic θ¯ or the semileptonic four-fermion interaction Clequ from which nuclear and atomic CP-violating properties arise.

Dates et versions

hal-05016967 , version 1 (02-04-2025)

Identifiants

Citer

Aurélien Marc, Timo Fleig. Semi-hadronic charge-parity violation interaction constants in CsAg, FrLi and FrAg molecules. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2025, 79 (3), pp.19. ⟨10.1140/epjd/s10053-025-00967-2⟩. ⟨hal-05016967⟩
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