Improved Limit on the Permanent Electric Dipole Moment of {sup 199}Hg

Journal Article · Fri Mar 13 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.101601· OSTI ID:21180274

Griffith, W C; Swallows, M D; Loftus, T H; Romalis, M V; Heckel, B R; Fortson, E N ^[1]

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1. Department of Physics, University of Washington, Seattle, Washington 98195 (United States)

We report the results of a new experimental search for a permanent electric dipole moment of {sup 199}Hg utilizing a stack of four vapor cells. We find d({sup 199}Hg)=(0.49{+-}1.29{sub stat}{+-}0.76{sub syst})x10{sup -29} e cm, and interpret this as a new upper bound, |d({sup 199}Hg)|<3.1x10{sup -29} e cm (95% C.L.). This result improves our previous {sup 199}Hg limit by a factor of 7, and can be used to set new constraints on CP violation in physics beyond the standard model.

• OSTI ID: 21180274
• Journal Information: Physical Review Letters, Vol. 102, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.102.101601; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CP INVARIANCE
ELECTRIC DIPOLE MOMENTS
MERCURY 199
STANDARD MODEL
VAPORS