High-Accuracy Calculation of 6s --> 7s Parity-Nonconserving Amplitude in Cs
Abstract
We calculated the parity-nonconserving (PNC) 6s-->7s amplitude in Cs. In the Dirac-Coulomb approximation our result is in good agreement with other calculations. Breit corrections to the PNC amplitude and to the Stark-induced amplitude β are found to be -0.4% and -1%, respectively. The weak charge of 133Cs is QW = -72.5+/-0.7 in agreement with the standard model.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2001
- DOI:
- 10.1103/PhysRevLett.86.3260
- arXiv:
- arXiv:physics/0101053
- Bibcode:
- 2001PhRvL..86.3260K
- Keywords:
-
- Physics - Atomic Physics;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages, LaTeX2e, uses revtex4.cls, submitted to PRL