1205.4247 (A. Barroso et al.)

Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle
with current data    [PDF]

A. Barroso, P. M. Ferreira, Rui Santos, João P. Silva

LHC has found hints for a Higgs particle of 125 GeV. We investigate the possibility that such a particle is a mixture of scalar and pseudoscalar states. For definiteness, we concentrate on a two Higgs doublet model with explicit CP violation and soft Z2 violation. Including all Higgs production mechanisms, we determine the current constraints obtained by comparing h -> gamma gamma with h -> V V*, and comment on the information which can be gained by measurements of h -> b \bar{b}. We find bounds |s_2| < 0.83 at one sigma, where |s_2|=0 (|s_2|=1) corresponds to a pure scalar (pure pseudoscalar) state.

View original: http://arxiv.org/abs/1205.4247