Simple two Higgs doublet model
  We study a simple two Higgs doublet model which reflects, in a phenomenological way, the idea of compositeness for the Higgs sector. It is relatively predictive. In one scenario, it allows for a "hidden" usual Higgs particle in the 100 GeV region and a possible dark matter candidate. 
Renata Jora, Sherif Moussa, Salah Nasri, Joseph Schechter and M. Naeem   Shahid