Parity Nonconservation in Ytterbium

9877046预算将进行灵敏的宇称混合测量，旨在提高低动量转移时温伯格角值的精度，并确定违反宇称的核极点矩。这些实验将利用原子Yb中预测的大宇称混合效应。测量一系列同位素的宇称混合将有可能从根本上消除原子理论在提取温伯格角方面的不确定性，这将是由于缺乏对核中子分布从同位素到同位素的变化的知识。

9877046BudkerA sensitive parity mixing measurement aimed at improving the precision on the value of the Weinberg angle at low momentum transfer and determinations of parity-violating nuclear anapole moments will be performed. The experiments will exploit the predicted large parity mixing effects in atomic ytterbium. Measurements of parity mixing for a series of isotopes will make it possible to essentially eliminate atomic theory uncertainty in extracting the Weinberg angle, which will be due to lack of knowledge of changes in nuclear neutron distributions from isotope to isotope.