Extending the Higgs sector: an extra singlet

Abstract

An extension of the Standard Model with an additional Higgs singlet is analyzed. Bounds on singlet admixture in 125 GeV h boson from electroweak radiative corrections and data on h production and decays are obtained. Possibility of double h production enhancement at 14 TeV LHC due to heavy higgs contribution is considered.

18 pages, 7 figures. v2: one equation added; references received after the publication of v1 are added

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