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

Yongliang Hao, Miroslav Ilias, Ephraim Eliav, Peter Schwerdtfeger, Victor V. Flambaum, Anastasia Borschevsky*

*Corresponding author for this work

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Abstract

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
DOIs
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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