We use the recently derived CP phase dependent analytic results for the supersymmetric electro-weak correction to gμ − 2 to constrain the explicit CP phases in softly broken supersymmetry using the new physics effect seen in the g-2 Brookhaven measurement. It is shown that the BNL data strongly constrains the CP violating phase θμ (the phase of the Higgs mixing parameter μ) and ξ2 (the phase of the SU(2) gaugino mass m¯2) and as much as 60−90% of the region in the ξ2 − θμ plane is eliminated over a significant region of the MSSM parameter space by the BNL constraint. The region of CP phases not excluded by the BNL experiment allows for large phases and for a satisfaction of the EDM constraints via the cancellation mechanism. We find several models with large CP violation which satisfy the EDM constraint via the cancellation mechanism and produce an αμSUSY consistent with the new physics signal seen by the Brookhaven experiment. The sparticle spectrum of these models lies within reach of the planned accelerator experiments.
CP phase, supersymmetry, BNL, Brookhaven experiment, high energy physics phenomenology, muon g-2 experiment
CP violation (Nuclear physics), Supersymmetry, Phenomenological theory (Physics)
Ibrahim, Tarek; Chattopadhyay, Utpal; and Nath, Pran, "Constraints on explicit CP violation from the Brookhaven muon g-2 experiment" (2001). Physics Faculty Publications. Paper 71. http://hdl.handle.net/2047/d20000424
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