MSSM predictions for the electric dipole moment of the 199Hg atom

Toby Falk, Keith A. Olive, Maxim Pospelov, Radu Roiban

Research output: Contribution to journalArticle

180 Citations (Scopus)

Abstract

The Minimal Supersymmetric Standard Model can possess several CP-violating phases beyond the conventional Cabibbo-Kobayashi-Maskawa phase. We calculate the contribution of these phases to T-violating nuclear forces. These forces induce a Schiff moment in the 199Hg nucleus, which is strongly limited by experiments aimed at the detection of the electric dipole moment of the mercury atom. The result for dHg is found to be very sensitive to the CP-violating phases of the MSSM and the calculation carries far fewer QCD uncertainties than the corresponding calculation of the neutron EDM. In certain regions of the MSSM parameter space, the limit from the mercury EDM is stronger than previous constraints based on either the neutron or electron EDMs. We present combined constraints from the mercury and electron EDMs to limit both CP-violating phases of the MSSM. We also present limits in mSUGRA models with unified gaugino and scalar masses at the GUT scale.

Original languageEnglish (US)
Pages (from-to)3-22
Number of pages20
JournalNuclear Physics B
Volume560
Issue number1-3
DOIs
StatePublished - Nov 1 1999

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electric moments
electric dipoles
dipole moments
predictions
atoms
neutrons
grand unified theory
electrons
quantum chromodynamics
scalars
moments
nuclei

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Falk, Toby ; Olive, Keith A. ; Pospelov, Maxim ; Roiban, Radu. / MSSM predictions for the electric dipole moment of the 199Hg atom. In: Nuclear Physics B. 1999 ; Vol. 560, No. 1-3. pp. 3-22.
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MSSM predictions for the electric dipole moment of the 199Hg atom. / Falk, Toby; Olive, Keith A.; Pospelov, Maxim; Roiban, Radu.

In: Nuclear Physics B, Vol. 560, No. 1-3, 01.11.1999, p. 3-22.

Research output: Contribution to journalArticle

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AU - Falk, Toby

AU - Olive, Keith A.

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AU - Roiban, Radu

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AB - The Minimal Supersymmetric Standard Model can possess several CP-violating phases beyond the conventional Cabibbo-Kobayashi-Maskawa phase. We calculate the contribution of these phases to T-violating nuclear forces. These forces induce a Schiff moment in the 199Hg nucleus, which is strongly limited by experiments aimed at the detection of the electric dipole moment of the mercury atom. The result for dHg is found to be very sensitive to the CP-violating phases of the MSSM and the calculation carries far fewer QCD uncertainties than the corresponding calculation of the neutron EDM. In certain regions of the MSSM parameter space, the limit from the mercury EDM is stronger than previous constraints based on either the neutron or electron EDMs. We present combined constraints from the mercury and electron EDMs to limit both CP-violating phases of the MSSM. We also present limits in mSUGRA models with unified gaugino and scalar masses at the GUT scale.

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