ATOMIC PARITY NONCONSERVATION AND NEUTRON RADII IN CESIUM ISOTOPES

被引:48
作者
CHEN, BQ [1 ]
VOGEL, P [1 ]
机构
[1] CALTECH, NORMAN BRIDGE LAB PHYS 16133, PASADENA, CA 91125 USA
来源
PHYSICAL REVIEW C | 1993年 / 48卷 / 03期
关键词
D O I
10.1103/PhysRevC.48.1392
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The interpretation of future precise experiments on atomic parity violation in terms of parameters of the standard model could hampered by uncertainties in the atomic and nuclear structure. While the former can be overcome by measurement in a series of isotopes, the nuclear structure requires knowledge of the neutron density. We use the nuclear Hartree-Fock method, which includes deformation effects, to calculate the proton and neutron densities in 125Cs-139Cs. We argue that the good agreement with the experimental charge radii, binding energies, and ground-state spins signifies that the phenomenological nuclear force and the method of calculation that we use is adequate. Based on this agreement, and on calculations involving different effective interactions, we estimate the uncertainties in the differences of the neutron radii delta[r2]N,N' and conclude that they cause uncertainties in the ratio of weak charges, the quantities determined in the atomic parity nonconservation experiments, of less than 10(-3). Such an uncertainty, although to some extent model dependent, is safely smaller than the anticipated experimental error.
引用
收藏
页码:1392 / 1400
页数:9
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