2017/11/30 by Emine Altuntas, Jeffrey Ammon, Sidney B. Cahn +1 · 2 citations
Physics and Astronomy · #physics.atom-ph #nucl-ex
paper · pdf · doi:10.1103/physreva.97.042101
published as Phys. Rev. A 97, 042101 (2018) · 25 pages, 15 figures, This longer article provides more details about our experimental techniques, measurement methods and analysis of the systematic uncertainty described briefly in the short version in arXiv:1801.05316
arxiv created 2018/01/17 · arxiv updated 2018/04/06
Nuclear spin-dependent parity violation (NSD-PV) effects in atoms and molecules arise from Z0 boson exchange between electrons and the nucleus, and from the magnetic interaction between electrons and the parity-violating nuclear anapole moment. It has been proposed to study NSD-PV effects using an enhancement of the observable effect in diatomic molecules [D. DeMille et al., Phys. Rev. Lett. 100, 023003 (2008)]. Here, we demonstrate measurements of this type with sensitivity surpassing that of any previous atomic PV measurement, using the test system 138\mathrmBa19F. We show that systematic errors associated with our technique can be suppressed to at least the level of the present statistical sensitivity. With ∼ 170 hours of data, we measure the matrix element, W, of the NSD-PV interaction with uncertainty δW/(2π)<0.7 Hz, for each of two configurations where W must have different signs. This sensitivity would be sufficient to measure NSD-PV effects of the size anticipated across a wide range of nuclei.