Non-minimal Split Supersymmetry

Details Non-minimal Split Supersymmetry Non-minimal Split Supersymmetry

2006-12-29

arxiv.org/abs/hep-ph/0612368v2

JHEP 0702:055,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 9 figures, typos corrected

Scientific paper

10.1088/1126-6708/2007/02/055

We present an extension of the minimal split supersymmetry model, which is capable of explaining the baryon asymmetry of the Universe. Instead of MSSM we start from NMSSM and split its spectrum in such a way that the low energy theory contains neutral particles, in addition to the content of minimal split supersymmetry. They trigger the strongly first order electroweak phase transition (EWPT) and provide an additional source of CP-violation. In this model, we estimate the amount of the baryon asymmetry produced during EWPT, using WKB approximation for CP-violating sources in diffusion equations. We also examine the contribution of CP-violating interactions to the electron and neutron electric dipole moments and estimate the production of the neutralino dark matter. We find that both phenomenological and cosmological requirements can be fulfilled in this model.

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