Development of the configuration-interaction plus all-order method and application to the parity-nonconserving amplitude and other properties of Pb

S. G. Porsev, M. G. Kozlov, M. S. Safronova, I. I. Tupitsyn

Research output

9 Citations (Scopus)

Abstract

We have developed a significantly more flexible variant of the relativistic atomic method of calculation that combines configuration-interaction and coupled-cluster approaches. The new version is no longer restricted to a specific choice of the initial approximation corresponding to the self-consistent field of the atomic core. We have applied this approach to calculation of different properties of atomic lead, including the energy levels, hyperfine structure constants, electric-dipole transition amplitudes, and E1 parity nonconserving (PNC) amplitude for the 6p(2) P-3(0) -6p(2) P-3(1) transition. The uncertainty of the E1 PNC amplitude was reduced by a factor of two in comparison with the previous most accurate calculation [V. A. Dzuba et al., Europhys. Lett. 7, 413 (1988)]. Our value for the weak charge Q(W) = -117(5) is in agreement with the standard-model prediction.
Original languageEnglish
Number of pages10
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume93
Issue number1
DOIs
Publication statusPublished - 2016
Externally publishedYes

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