The Neutron Electric Dipole Moment

He, Xiao-Gang; McKellar, Bruce H.J.; Pakvasa, Sandip

doi:10.1142/S0217751X91002628

The Neutron Electric Dipole Moment

Xiao-Gang He
(
- Melbourne U.
)
,
Bruce H.J. McKellar
(
- Melbourne U.
)
,
Sandip Pakvasa
(
- Hawaii U.
)

Jan, 1989

62 pages

Published in:

Int.J.Mod.Phys.A 4 (1989) 5011,
Int.J.Mod.Phys.A 6 (1991) 1063-1066 (erratum)

DOI:

Report number:

UH-511-703-90,
UH-511-666-89,
UM-P-90-49,
UM-P-89-2,
OZ-1989-01,
OZ-P-90-19

reference search152 citations

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Abstract: (WSP)

We have made a systematic study of the electric dipole moment (EDM) of neutron Dn in various models of CP violation. We find that (i) in the standard KM model with 3 families, the neutron EDM is in the range 1.4 × 10−33 ≤ |Dn| ≤ 1.6 × 10−31e.cm, (ii) the two Higgs doublet model has approximately the same value of Dn as the standard model, (iii) Dn in the Weinberg model is predicted to satisfy |Dn| > 10−25e.cm, (iv) in a class of left-right symmetric models Dn is of the order of 10−26±1e.cm, (v) in supersymmetric models, Dn is of order 10−22ϕ e.cm with ϕ being the possible phase difference of gluino mass and the gluino-quark-squark mixing matrix, (vi)the strong CP parameter θ is found to be θ < 10−9, using the present experimental limit that |Dn| < 2.6 × 10−25e.cm with 90% confidence.

N: ELECTRIC MOMENT
CP: violation
HIGGS PARTICLE: MULTIPLET
MULTIPLET: HIGGS PARTICLE
Kobayashi-Maskawa model
GAUGE FIELD THEORY: SU(2) X SU(2) X U(1)
MODEL: HIGGS
SUPERSYMMETRY
MIXING ANGLE: (SQUARK GLUINO QUARK)
STRONG INTERACTION: CP

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