Measuring nuclear-spin-dependent parity violation with molecules: Experimental methods and analysis of systematic errors

被引：21
作者：
Altuntas, Emine [1 ,2 ,3 ]
Ammon, Jeffrey [1 ,4 ]
Cahn, Sidney B. [1 ]
DeMille, David [1 ]
机构：
[1] Yale Univ, Dept Phys, POB 208120, New Haven, CT 06520 USA
[2] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA
[3] Univ Maryland, Gaithersburg, MD 20899 USA
[4] MIT, Lincoln Lab, Lexington, MA 02420 USA
来源：
PHYSICAL REVIEW A | 2018年 / 97卷 / 04期
基金：
美国国家科学基金会;
关键词：
ANAPOLE MOMENT; BEAM SOURCE; NONCONSERVATION; ELECTRON; ENHANCEMENT; COLD; BAND;
D O I：
10.1103/PhysRevA.97.042101
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nuclear-spin-dependent parity violation (NSD-PV) effects in atoms and molecules arise from Z(0) 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 highly sensitive measurements of this type, using the test system (BaF)-Ba-138-F-19. We show that systematic errors associated with our technique can be suppressed to at least the level of the present statistical sensitivity. With similar to 170 h of data, we measure the matrix element W of the NSD-PV interaction with uncertainty delta W/(27 pi) < 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.
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页数：22
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