Seminarium Teorii Oddziaływań Elementarnych

The lepton-sepcific (or type X) 2HDM (L2HDM) is an attractive candidate explaining the muon g - 2 anomaly requiring a light CP-odd boson A and large tan β. This scenario leads to τ -rich signatures, such as 3τ , 4τ and 4τ + W/Z, which can be readily accessible at the LHC. We first study the whole L2HDM parameter space to identify allowed regions of extra Higgs boson masses and various couplings. In the regions of interest, we derive the LHC8 constraints and then analyze the LHC14 prospects. A correlated study of the upcoming precision determination of the 125 GeV Higgs boson decay properties as well as the observation of multi-tau events at the next runs of LHC will be able to shed light on the L2HDM option for the muon g - 2.