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Nuclear anapole moment interaction in BaF from relativistic coupled-cluster theory

Hao, Y., Ilias, M., Eliav, E., Schwerdtfeger, P., Flambaum, V. V. & Borschevsky, A., 27-Sep-2018, In : Physical Review A. 98, 3, 8 p., 032510.

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  • Nuclear anapole moment interaction in BaF from relativistic coupled-cluster theory

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We present high-accuracy relativistic coupled-cluster calculations of the P-odd interaction coefficient W-A describing the nuclear anapole moment effect on the molecular electronic structure. The molecule under study, BaF, is considered a promising candidate for the measurement of the nuclear anapole moment, and the preparation for the experiment is now underway [E. Altuntas et al., Phys. Rev. Lett. 120, 142501 (2018)]. The influence of various computational parameters (size of the basis set, treatment of relativistic effects, and treatment of electron correlation) on the calculated W-A coefficient is investigated and a recommended value of 147.7 Hz with an estimated uncertainty of 1.5% is proposed.

Original languageEnglish
Article number032510
Number of pages8
JournalPhysical Review A
Volume98
Issue number3
Publication statusPublished - 27-Sep-2018

    Keywords

  • ATOMIC PARITY NONCONSERVATION, ELECTRIC-FIELD GRADIENTS, DENSITY FUNCTIONALS, DIATOMIC-MOLECULES, WEAK-INTERACTIONS, P-ODD, VIOLATION, IMPLEMENTATION, APPROXIMATION, ENHANCEMENT

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