Calculations of the neutron skin and its effect in atomic parity violation
Calculations of the neutron skin and its effect in atomic parity violation
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中子皮的计算及其对原子宇称不守恒的影响
DOI：
10.1103/physrevc.79.035501
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发表时间：
2008
影响因子：
3.1
通讯作者：
V. Flambaum
中科院分区：
文献类型：
--
作者：
B. A. Brown;A. Derevianko;V. Flambaum
我们计算了Cs、Ba、Sm、Dy、Yb、Tl、Pb、Bi、Fr和Ra等多种同位素中原子核的中子表皮及其对原子宇称非守恒（PNC）的贡献。解决了三个问题：(i)单同位素PNC的中子皮诱导误差，（ii）使用原子PNC测量中子皮的可能性，以及（iii）不同同位素中PNC效应比例的中子皮诱导误差。在后一种情况下，不同同位素中子趋肤值的相关性导致误差抵消；这使得同位素比方法在寻找标准模型之外的新物理时成为一个有竞争力的工具。
We perform calculations for the neutron skin of nuclei and its contribution to atomic parity nonconservation (PNC) in many isotopes of Cs, Ba, Sm, Dy, Yb, Tl, Pb, Bi, Fr, and Ra. Three problems are addressed: (i) neutron-skin-induced errors to single-isotope PNC, (ii) the possibility of measuring neutron skin using atomic PNC, and (iii) neutron-skin-induced errors for ratios of PNC effects in different isotopes. In the latter case the correlations in the neutron skin values for different isotopes lead to cancellations of the errors; this makes the isotopic ratio method a competitive tool in a search for new physics beyond the standard model.