Feasibility of light scalars in a class of two-Higgs-doublet models and their decay signatures

Understand

We demonstrate that light charged and extra neutral scalars in the (100-200) GeV mass range pass the potentially dangerous flavor constraints in a particular class of two-Higgs-doublet model which has appropriately suppressed flavor-changing neutral currents at tree level.

• We study their decay branching ratios into various fermionic final states and comment on the possibility of their detection in the collider experiments.
• We also remark on how their trademark decay signatures can be used to discriminate them from the light nonstandard scalars predicted in other two-Higgs-doublet models.