Dark forces and atomic electric dipole moments
Heman Gharibnejad, Andrei Derevianko
TL;DR
This paper investigates how hypothetical finite-mass mediators of T,P-odd interactions influence atomic electric dipole moments, providing analytical and numerical analysis to set experimental limits on their properties.
Contribution
It introduces a model for finite-mass mediators affecting atomic EDMs and derives new constraints from experimental data, extending beyond contact interaction assumptions.
Findings
Finite-mass mediators can significantly alter atomic EDM predictions.
Derived limits on mediator coupling strengths and masses from 199Hg EDM measurements.
Analytical and numerical methods compare mediator-induced EDMs with contact interaction results.
Abstract
Postulating the existence of a fnite-mass mediator of T,P-odd coupling between atomic electrons and nucleons we consider its effect on permanent electric dipole moment (EDM) of diamagnetic atoms. We present both numerical and analytical analysis for such mediator-induced EDMs and compare it with EDM results for the conventional contact interaction. Based on this analysis we derive limits on coupling strengths and carrier masses from experimental limits on EDM of 199Hg atom.
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