MW and sin^2θ_eff in Split SUSY: present and future expectations

Details MW and sin^2θ_eff in Split SUSY: present and future expectations MW and sin^2θ_eff in Split SUSY: present and future expectations

2005-08-23

arxiv.org/abs/hep-ph/0508241v2

JHEP0601:121,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 13 pages, 4 figures. Comments added

Scientific paper

10.1088/1126-6708/2006/01/121

We analyse the precision electroweak observables MW and sin^2\theta_eff and their correlations in the recently proposed Split SUSY model. We compare the results with the Standard Model and Minimal Supersymmetric Standard Model predictions, and with present and future experimental accuracies. Present experimental accuracies in (MW, sin^2\theta_eff) do not allow constraints to be placed on the Split SUSY parameter space. We find that the shifts in (MW, sin^2\theta_eff) induced by Split SUSY can be larger than the anticipated accuracy of the GigaZ option of the International Linear Collider, and that the most sensitive observable is sin^2\theta_eff. These large shifts are possible also for large chargino masses in scenarios with small tan(\beta) =~ 1.

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