Loop-Induced CP Violation in the Gaugino and Higgsino Sectors of Supersymmetric Theories

Details Loop-Induced CP Violation in the Gaugino and Higgsino Sectors of Supersymmetric Theories Loop-Induced CP Violation in the Gaugino and Higgsino Sectors of Supersymmetric Theories

1999-12-06

arxiv.org/abs/hep-ph/9912253v2

Phys.Rev. D62 (2000) 016007

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, as to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.62.016007

We show that the gaugino and higgsino sectors of supersymmetric theories can naturally acquire observable CP violation through radiative effects which originate from large CP-violating trilinear couplings of the Higgs bosons to the third-generation scalar quarks. These CP-violating loop effects are not attainable by evolving the supersymmetric renormalization-group equations from a higher unification scale down to the electroweak one. We briefly discuss the phenomenological consequences of such a scenario, and as an example, calculate the two-loop contribution to the neutron electric dipole moment generated by the one-loop chromo-electric dipole moment of the gluino.

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