Probing Wrong-Sign hbb Couplings in h→Yγ

摘要

213.1 Motivation Couplings of the 125 GeV scalar discovered at the LHC should be probed in detail to compare it with the SM Higgs. One interesting possibility is the "wrong-sign" solution, where the hbb coupling has a sign opposite to that of the SM. Among variants of two Higgs doublet model (2HDM) with a softly broken Z_2 symmentry [1,2], type II and Flipped can have a "wrong sign" solution. These models have BSM scalars H±, A, H, apart from a scalar h, which can be identified to be the 125 GeV scalar of LHC.