A signal in the light Higgs-boson search at GeV and LEP
A 96 GeV Higgs Boson in the 2HDM plus Singlet
We discuss a signal (local) in the light higgs-boson search in the diphoton decay mode as reported by cms, together with a excess (local) in the final state at lep in the same mass range.We interpret this possible signal as a higgs boson in the 2higgs doublet model type 2 with an additional singlet, which can be either complex (2hdms) or real (n2hdm).We find that the lightest cp-even higgs boson of the two models can equally yield a perfect fit to both excesses simultaneously, while the second lightest state is in full agreement with the measurements at gev, and the full higgs-boson sector is in agreement with all exclusion bounds from the tevatron, the tevatron and the lhc as well as other theoretical and experimental constraints.We derive bounds on the 2hdms and n2hdm sectors from a fit to both excesses and describe how this signal can be further analyzed at future colliders, such as the international linear collider (ilc).
