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arXiv · 1205.4247

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

A. Barroso·P. M. Ferreira·Rui Santos·João P. Silva
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Abstract

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.

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A. Barroso, P. M. Ferreira, Rui Santos, João P. Silva. 2012-05-18. Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data. https://doi.org/10.1103/physrevd.86.015022

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