Improved experimental limit on the electric dipole moment of the neutron

C A Baker; D D Doyle; P Geltenbort; K Green; M G D van der Grinten; P G Harris; P Iaydjiev; S N Ivanov; D J R May; J M Pendlebury; J D Richardson; D Shiers; K F Smith

doi:10.1103/PhysRevLett.97.131801

Improved experimental limit on the electric dipole moment of the neutron

Phys Rev Lett. 2006 Sep 29;97(13):131801. doi: 10.1103/PhysRevLett.97.131801. Epub 2006 Sep 27.

Authors

C A Baker¹, D D Doyle, P Geltenbort, K Green, M G D van der Grinten, P G Harris, P Iaydjiev, S N Ivanov, D J R May, J M Pendlebury, J D Richardson, D Shiers, K F Smith

Affiliation

¹ Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom.

PMID: 17026025
DOI: 10.1103/PhysRevLett.97.131801

Abstract

An experimental search for an electric dipole moment (EDM) of the neutron has been carried out at the Institut Laue-Langevin, Grenoble. Spurious signals from magnetic-field fluctuations were reduced to insignificance by the use of a cohabiting atomic-mercury magnetometer. Systematic uncertainties, including geometric-phase-induced false EDMs, have been carefully studied. The results may be interpreted as an upper limit on the neutron EDM of |d(n)|< 2.9 x 10(-26)e cm (90% C.L.).