6533b824fe1ef96bd12801d9

RESEARCH PRODUCT

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

Miroslav IliašVictor V. FlambaumVictor V. FlambaumEphraim EliavYongliang HaoPeter SchwerdtfegerPeter SchwerdtfegerAnastasia Borschevsky

subject

ATOMIC PARITY NONCONSERVATIONDIATOMIC-MOLECULESP-ODDVIOLATIONAtomic Physics (physics.atom-ph)Nuclear TheoryDENSITY FUNCTIONALSFOS: Physical sciences01 natural sciences010305 fluids & plasmasPhysics - Atomic PhysicsENHANCEMENTMolecular electronic structure0103 physical sciencesIMPLEMENTATIONNuclear Experiment010306 general physicsBasis setPhysicsElectronic correlationELECTRIC-FIELD GRADIENTSDiatomic moleculeWEAK-INTERACTIONSCoupled clusterMoment (physics)Atomic physicsRelativistic quantum chemistryAPPROXIMATION

description

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 [Altunas et al., Phys. Rev. Lett. 120, 142501 (2018)]. 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.

yearjournalcountryeditionlanguage
2018-09-27Physical Review A
10.1103/physreva.98.032510https://research.rug.nl/en/publications/e88f1603-5e7f-4fc3-9ef8-916cb3b074ce