Study of lepton EDMs in the U(1)X SSM

The minimal supersymmetric extension of the standard model(MSSM)is extended to the U(1)XSSM,whose local gauge group is SU(3)C×SU(2)L×U(1)Y×U(1)X.To obtain the U(1)XSSM,we add new superfields to the MSSM,namely,three Higgs singletsηη,S and right-handed neutrinosνi.The charge conjugate and parity(CP)violating effects are considered to study the lepton electric dipole moment(EDM)in the U(1)XSSM.There are more CP violating phases in the U(1)XSSM than in the standard model(SM).In this model,several new parameters(θS,θBB′,θBL)are considered as CP violating phases;hence,there are new contributions to lepton EDMs.This is conducive to exploring the source of CP violation and probing new physics beyond the SM.