401 citations · 975 across the 7 of their papers we have counts for
8 papers · 1 filter
Natural Multi-Higgs Model with Dark Matter and CP Violation
B. Grzadkowski, O. M. Ogreid, P. Osland
We explore an extension of the Inert Doublet Model which allows also for CP violation in the Higgs sector. This necessitates two non-inert doublets. The lightest neutral scalar of…
The oblique parameters in multi-Higgs-doublet models
W. Grimus, L. Lavoura, O. M. Ogreid +1
We present general expressions for the oblique parameters S, T, U, V, W, and X in the SU(2)xU(1) electroweak model with an arbitrary number of scalar SU(2) doublets, with hyperchar…
A precision constraint on multi-Higgs-doublet models
W. Grimus, L. Lavoura, O. M. Ogreid +1
We derive a general expression for Delta rho (or, equivalently, for the oblique parameter T) in the SU(2) x U(1) electroweak model with an arbitrary number of scalar SU(2) doublets…
Profile of Two-Higgs-Doublet-Model Parameter Space
Abdul Wahab El Kaffas, Odd Magne Ogreid, Per Osland
We review recent work on constraining the parameter space of the Two-Higgs-Doublet Model by theoretical and experimental results. Some characteristics of the model, in particular t…
Constraining the Two-Higgs-Doublet-Model parameter space
Abdul Wahab El Kaffas, Odd Magne Ogreid, Per Osland
We confront the Two-Higgs-Doublet Model with a variety of experimental constraints as well as theoretical consistency conditions. The most constraining data are the \bar B\to X_sγd…
CP Violation, Stability and Unitarity of the Two Higgs Doublet Model
Abdul Wahab El Kaffas, Odd Magne Ogreid, Per Osland
The Two-Higgs-Doublet Model is considered, in its CP-non-conserving version. It is shown quantitatively how vacuum stability and tree-level unitarity in the Higgs-Higgs-scattering…