Variations of the neutralino elastic cross-section with CP-violating phases

Toby Falk; Andrew Ferstl; Keith A. Olive

doi:10.1016/S0927-6505(99)00125-5

Variations of the neutralino elastic cross-section with CP-violating phases

Toby Falk, Andrew Ferstl, Keith A. Olive

Physics and Astronomy (Twin Cities)

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Abstract

We analyze the neutralino-nucleus elastic cross-section in the minimal supersymmetric extension of the standard model (MSSM), including contributions from CP-violating phases, using the four-fermi neutralino-quark interaction. Over a wide range of the MSSM parameter space, we show the variations in the cross-sections due to these phases. We further concentrate on the regions which are consistent with constraints from the electric dipole moment of the electron, neutron and mercury atom. In the regions we examine in detail, we find suppressions by up to a factor of two, while enhancements in the cross-sections are no greater than ~10%.

Original language	English (US)
Pages (from-to)	301-316
Number of pages	16
Journal	Astroparticle Physics
Volume	13
Issue number	4
DOIs	https://doi.org/10.1016/S0927-6505(99)00125-5
State	Published - Jul 1 2000

Bibliographical note

Funding Information:
The work of K.O. was supported in part by DOE grant DE–FG02–94ER–40823. The work of T.F. was supported in part by DOE grant DE–FG02–95ER–40896 and in part by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation.

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title = "Variations of the neutralino elastic cross-section with CP-violating phases",

abstract = "We analyze the neutralino-nucleus elastic cross-section in the minimal supersymmetric extension of the standard model (MSSM), including contributions from CP-violating phases, using the four-fermi neutralino-quark interaction. Over a wide range of the MSSM parameter space, we show the variations in the cross-sections due to these phases. We further concentrate on the regions which are consistent with constraints from the electric dipole moment of the electron, neutron and mercury atom. In the regions we examine in detail, we find suppressions by up to a factor of two, while enhancements in the cross-sections are no greater than ~10%.",

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AU - Ferstl, Andrew

AU - Olive, Keith A.

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N2 - We analyze the neutralino-nucleus elastic cross-section in the minimal supersymmetric extension of the standard model (MSSM), including contributions from CP-violating phases, using the four-fermi neutralino-quark interaction. Over a wide range of the MSSM parameter space, we show the variations in the cross-sections due to these phases. We further concentrate on the regions which are consistent with constraints from the electric dipole moment of the electron, neutron and mercury atom. In the regions we examine in detail, we find suppressions by up to a factor of two, while enhancements in the cross-sections are no greater than ~10%.

AB - We analyze the neutralino-nucleus elastic cross-section in the minimal supersymmetric extension of the standard model (MSSM), including contributions from CP-violating phases, using the four-fermi neutralino-quark interaction. Over a wide range of the MSSM parameter space, we show the variations in the cross-sections due to these phases. We further concentrate on the regions which are consistent with constraints from the electric dipole moment of the electron, neutron and mercury atom. In the regions we examine in detail, we find suppressions by up to a factor of two, while enhancements in the cross-sections are no greater than ~10%.

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Variations of the neutralino elastic cross-section with CP-violating phases

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