Hadronic electric dipole moments in R-parity violating supersymmetry

被引:16
作者
Faessler, Amand
Gutsche, Thomas
Kovalenko, Sergey
Lyubovitskij, Valery E.
机构
[1] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany
[2] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
关键词
D O I
10.1103/PhysRevD.73.114023
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We calculate the electric dipole moments (EDM) of the neutral Hg-199 atom, neutron and deuteron within a generic R-parity violating SUSY model (R-p SUSY) on the basis of a one-pion-exchange model with CP-odd pion-nucleon interactions. We consider two types of the R-p SUSY contributions to the above hadronic EDMs: via the quark chromoelectric dipole moments (CEDM) and CP-violating 4-quark interactions. We demonstrate that the former contributes to all the three studied EDMs while the latter appears only in the nuclear EDMs via the CP-odd nuclear forces. We find that the R-p SUSY induced 4-quark interactions arise at tree level through the sneutrino exchange and involve only s and b quarks. Therefore, their effect in hadronic EDMs is determined by the strange and bottom-quark sea of the nucleon. From the null experimental results on the hadronic EDMs we derive the limits on the imaginary parts of certain products Im(lambda 'lambda '(*)) of the trilinear R-p-couplings and show that the currently best limits come from the Hg-199 EDM experiments. We demonstrate that some of these limits are better than those existing in the literature. We argue that future storage ring experiments on the deuteron EDM are able to improve these limits by several orders of magnitude.
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页数:6
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