An Improved Experimental Limit on the Electric Dipole Moment of the Neutron

Details An Improved Experimental Limit on the Electric Dipole Moment of the Neutron An Improved Experimental Limit on the Electric Dipole Moment of the Neutron

2006-02-09

arxiv.org/abs/hep-ex/0602020v3

Phys.Rev.Lett.97:131801,2006

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 2 figures. The published PRL is slightly more terse (e.g. no section headings) than this version, due to space constr

Scientific paper

10.1103/PhysRevLett.97.131801

An experimental search for an electric-dipole moment (EDM) of the neutron has been carried out at the Institut Laue-Langevin (ILL), 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. Two independent approaches to the analysis have been adopted. The overall results may be interpreted as an upper limit on the absolute value of the neutron EDM of |d_n| < 2.9 x 10^{-26} e cm (90% CL).

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