Refining the predictions of supersymmetric CP-violating models: A top-down approach

Details Refining the predictions of supersymmetric CP-violating models: A top-down approach Refining the predictions of supersymmetric CP-violating models: A top-down approach

2008-04-16

arxiv.org/abs/0804.2613v2

JHEP 0805:026,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

41 pages, 22 eps figures. A reference added and a typo corrected; version to appear in JHEP

Scientific paper

10.1088/1126-6708/2008/05/026

We explore in detail the consequences of the CP-violating phases residing in the supersymmetric and soft SUSY breaking parameters in the approximation that family flavour mixings are ignored. We allow for non-universal boundary conditions and in such a consideration the model is described by twelve independent CP-violating phases and one angle which misaligns the vacuum expectation values (VEVs) of the Higgs scalars. We run two-loop renormalization group equations (RGEs), for all parameters involved, including phases, and we properly treat the minimization conditions using the one-loop effective potential with CP-violating phases included. We show that the two-loop running of phases may induce sizable effects for the electric dipole moments (EDMs) that are absent in the one-loop RGE analysis. Also important corrections to the EDMs are induced by the Higgs VEVs misalignment angle which are sizable in the large tanb region. Scanning the available parameter space we seek regions compatible with accelerator and cosmological data with emphasis on rapid neutralino annihilations through a Higgs resonance. It is shown that large CP-violating phases, as required in Baryogenesis scenarios, can be tuned to obtain agreement with WMAP3 cold dark matter constraints, EDMs and all available accelerator data, in extended regions of the parameter space which may be accessible to LHC.

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