Electric dipole moments and dark matter in a CP violating MSSM

被引:6
|
作者
Abe, Tomohiro [1 ,2 ]
Omoto, Naoya [3 ]
Seto, Osamu [3 ,4 ]
Shindou, Tetsuo [5 ]
机构
[1] Nagoya Univ, Inst Adv Res, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan
[2] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan
[3] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan
[4] Hokkaido Univ, Inst Int Collaborat, Sapporo, Hokkaido 0600815, Japan
[5] Kogakuin Univ, Div Liberal Arts, Nakano Machi, Hachioji, Tokyo 1920045, Japan
关键词
SUPERSYMMETRIC STANDARD MODEL; NEUTRALINO RELIC DENSITY; LARGE TAN-BETA; MINIMAL SUPERGRAVITY; PHYSICS; UNIFICATION; NEUTRON; PHASES; ORDER; LIMIT;
D O I
10.1103/PhysRevD.98.075029
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate electric dipole moments (EDMs) in a CP-violating minimal supersymmetric standard model with the binolike neutralino dark matter (DM) annihilating through the heavy Higgs funnel. Motivated by the current experimental results, in particular, the measured mass of the standard model-like Higgs boson, we consider a mass spectrum with stop masses of about 10 TeV. For the other sfermions, we consider masses of about 100 TeV. We show that CP-violating phases of the order of ten degrees in gaugino and Higgsino mass parameters are consistent with the current bound by EDMs of the electron, the neutron, and the mercury. They are within the reach of future experiments. We also show that effects of CP-violating phases induce a difference in DM-nucleon scattering cross section by a factor.
引用
收藏
页数:14
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