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Advisor(s)
Abstract(s)
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 Z(2) violation. Including all Higgs production mechanisms, we determine the current constraints obtained by comparing h -> yy with h -> VV*, and comment on the information which can be gained by measurements of h -> b (b) over bar. We find bounds vertical bar s(2)vertical bar less than or similar to 0.83 at one sigma, where vertical bar s(2)vertical bar = 0 (vertical bar s(2)vertical bar = 1) corresponds to a pure scalar (pure pseudoscalar) state.
Description
Keywords
Electroweak Symmetry-Breaking Standard Model CP Violation Roots-S=7 Tev LHC Boson Anatomy
Citation
Barroso A, Ferreira P M, Santos R, Silva J P. Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data. Physical Review D . 2012; 1 (86).