Constraining type II 2HDM in light of LHC Higgs searches

We study the implication of the LHC Higgs search results on the Type II Two Higgs-Doublet Model. In particular, we explore the scenarios in which the observed 126 GeV Higgs signal is interpreted as either the light CP-even Higgs h or the heavy CP-even Higgs H-0. Imposing both theoretical and experimental constraints, we analyze the surviving parameter regions in m(H) (m(h)), m(A), m(H) +/- tan beta and sin(beta - alpha). We further identify the regions that could accommodate a 126 GeV Higgs with cross sections consistent with the observed Higgs signal. We find that in the h(0)-126 case, we are restricted to narrow regions of sin(beta - alpha) approximate to +/- 1with tan beta up to 4, or an extended region with 0.55 < sin(beta - alpha) < 0.9 and 1.5 < tan beta < 4. The values of mH, mA and mH, however, are relatively unconstrained. In the H-0-126 case, we are restricted to a narrow region of sin(beta - alpha) similar to 0 with tan beta up to about 8, or an extended region of sin(beta - alpha) between 0.8 to 0.05, with tan beta extended to 30 or higher. m(A) and m(H +/-)are nearly degenerate due to Delta p constraints. Imposing flavor constraints shrinks the surviving parameter space significantly for the H-0-126 case, limiting tan beta less than or similar to 10, but has little effect in the h(0)-126 case. We also investigate the correlation between gamma gamma, VV and bb/(TT) channels. gamma gamma and VV channels are most likely to be highly correlated with gamma gamma : VV similar to 1 for the normalized cross sections.