Improving quality of discriminating signal from background for Higgs portal model

In our universe nearly 95 percent of matters are unknown yet, we only have theory, so called Standard Model, for 5 percent of universe. Consequently, our next target of high energy physics is naturally Dark Matter and Dark Energy. In this study we studied Dark matter especially for Higgs portal model. In this study we found discrimination power is improved if we impose MET significance cut instead of MET cut and we don't need to include many variables when we impose MET significance cut.