Calculation of parity nonconservation in cesium and possible deviation from the Standard Model
High Energy Physics - Phenomenology
2007-05-23 v1 Atomic Physics
Abstract
We have calculated the 6s-7s parity nonconserving E1 transition amplitude (E_{PNC}) in cesium. This calculation has been performed with higher numerical accuracy than our 1989 calculation [V.A. Dzuba, V.V. Flambaum, and O.P. Sushkov, Phys. Lett. A {\bf 141}, 147]. Also the Breit interaction has been included and the radiative corrections estimated. Our final result is E_{PNC}=0.902 (1 +/- 0.7%)iea_{B}(Q_{W}/N). This represents an improvement in the accuracy of the calculation from the 1% error claimed in 1989. This result corresponds to a nuclear weak charge for Cs, Q_{W}=-72.39 (1 +/- 0.4% (exp) +/- 0.7% (theory)). We conclude that there is no significant deviation from the Standard Model value -73.09(3).
Keywords
Cite
@article{arxiv.hep-ph/0111019,
title = {Calculation of parity nonconservation in cesium and possible deviation from the Standard Model},
author = {V. A. Dzuba and V. V. Flambaum and J. S. M. Ginges},
journal= {arXiv preprint arXiv:hep-ph/0111019},
year = {2007}
}
Comments
18 pages, 10 figures