The Neutron Electric Dipole Moment and CP-violating Couplings in the Supersymmetric Standard Model without R-parity

Details The Neutron Electric Dipole Moment and CP-violating Couplings in the Supersymmetric Standard Model without R-parity The Neutron Electric Dipole Moment and CP-violating Couplings in the Supersymmetric Standard Model without R-parity

2000-04-18

arxiv.org/abs/hep-ph/0004170v2

Phys.Rev.D62:095002,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

final manuscript to appear in Phys. Rev. D, 15 pages, latex, 4 figures included

Scientific paper

10.1103/PhysRevD.62.095002

We analyze the neutron electric dipole moment (EDM) in the Minimal Supersymmetric Model with explicit R-parity violating terms. The leading contribution to the EDM occurs at the 2-loop level and is dominated by the chromoelectric dipole moments of quarks, assuming there is no tree-level mixings between sleptons and Higgs bosons or between leptons and gauginos. Based on the experimental constraint on the neutron EDM, we set limits on the imaginary parts of complex couplings ${\lambda'}_{ijk}$ and ${\lambda}_{ijk}$ due to the virtual b-loop or tau-loop.

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