Eur. Phys. J. A (2007) 32: 517-523
https://doi.org/10.1140/epja/i2006-10427-7

PAVI 2006

Theoretical overview of atomic parity violation

Recent developments and challenges

¹ Physics Department, University of Nevada, 89557, Reno, NV, USA
² Petersburg Nuclear Physics Institute, Leningrad district, 188300, Gatchina, Russia

^* e-mail: andrei@unr.edu

Received: 31 August 2006
Accepted: 18 March 2007
Published online: 10 July 2007

Abstract

Recent advances in interpreting the most accurate-to-date measurement of atomic parity violation in Cs are reviewed. The inferred nuclear weak charge, Q _W( ^133Cs ) = - 72.65(28)_expt(36)_theor , agrees with the prediction of the standard model at 1σ level. Further improved interpretation is limited by an accuracy of solving the basic correlation problem of the atomic structure. We report on our progress in solving this problem within the relativistic coupled-cluster formalism. We include single, double and triple electronic excitations in the coupled-cluster expansion. Numerical results for energies, electric-dipole matrix elements, and hyperfine-structure constants of Cs are presented.