Theoretical overview of atomic parity violation. Recent developments and challenges

Details Theoretical overview of atomic parity violation. Recent developments and challenges Theoretical overview of atomic parity violation. Recent developments and challenges

2006-08-16

arxiv.org/abs/hep-ph/0608178v2

Eur.Phys.J.A32:517-523,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

PAVI'06 proceedings + EJPA; refs + SM Qw fixed

Scientific paper

10.1140/epja/i2006-10427-7

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 = - 72.65(28)_expt (36)_theor, agrees with the prediction of the standard model at 1 sigma level. Further improved interpretation is limited by an accuracy of solving basic correlation problem of 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.

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