Enhanced nuclear Schiff moment and time reversal violation in 229Th-containing molecules
V.V. Flambaum
TL;DR
This paper discusses how octupole deformation in 229Th enhances nuclear Schiff moments and T,P-violating effects in certain molecules, offering new avenues for testing fundamental symmetry violations and searching for axions.
Contribution
It identifies specific molecular states with enhanced T,P-violating effects in 229Th compounds, proposing experimental tests for CP-violation theories.
Findings
Enhanced Schiff moments in 229Th due to octupole deformation
Significant T,P-violating effects in specific molecular states
Potential for experiments to test CP-violation and search for axions
Abstract
Octupole deformation results in a strongly enhanced collective Schiff moment in 229Th nucleus. An additional enhancement of time reversal (T) and parity (P) violating effects (such as T,P-violating electric dipole moments) appears in the ground 1Sigma state and in the metastable 3Delta_1 state of diatomic molecule 229ThO. Similar enhancements exist in molecular ions 229ThOH+, 229ThF+ and 225,223RaOH+. Corresponding experiments may be used to test CP-violation theories predicting T,P-violating nuclear forces and to search for axions.
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