Muon g-2 and CP violation in MSSM

2021/04/07 by Han, Chengcheng
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2104.03292

Abstract

We study the constraints of the CP violation in the muon g-2 preferred region of the minimal supersymmetric standard model assuming a universal slepton masses within first two generations. We present two particular scenarios where the g-2 anomaly is predicted within 2 σ level mainly through the chargino loop or the bino loop. We found that for both cases the electron EDM experiment already highly constrained the CP phase of the parameters: either the Arg[μM₁] or Arg[μM₂] should be smaller than \mathcal O(2-3)×10^-5. If the muon g-2 anomaly is explained by the MSSM, a particular SUSY breaking mechanism is needed to guarantee the small CP phase of SUSY parameters. Otherwise, a tuning of \mathcal O(10^-5) is needed to cancel the phase in a general CP violated SUSY model.

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