Higgs bosons of a supersymmetric $E_6$ model at the Large Hadron   Collider
  It is found that CP symmetry may be explicitly broken in the Higgs sector of a supersymmetric $E_6$ model with two extra neutral gauge bosons at the one-loop level. The phenomenology of the model, the Higgs sector in particular, is studied for a reasonable parameter space of the model, in the presence of explicit CP violation at the one-loop level. At least one of the neutral Higgs bosons of the model might be produced via the $WW$ fusion process at the Large Hadron Collider. 
S. W. Ham (KAIST), J. O. Im (KU), E. J. Yoo (KU), and S. K. OH (KU)