Browsing Bergen Open Research Archive by Author "Grzadkowski, B."
Now showing items 1-3 of 3
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Exploring the CP-violating Inert-Doublet Model
Grzadkowski, B.; Ogreid, Odd Magne; Osland, Per; Pukhov, A.; Poormohammadi, Mahdi (Peer reviewed; Journal article, 2011-06-01)We have explored properties of an extension of the Inert Doublet Model by the addition of an extra non-inert scalar doublet. The model offers a possibility of CP violation in the scalar sector and a candidate for the Dark ... -
New symmetries of the two-Higgs-doublet model
Ferreira, P.M.; Grzadkowski, B.; Øgreid, Odd Magne; Osland, Per (Journal article; Peer reviewed, 2024)The Two Higgs Doublet Model invariant under the gauge group SU(2) × U(1) is known to have six additional global discrete or continuous symmetries of its scalar sector.We have discovered regions of parameter space of the ... -
Softly broken symmetries in the 2HDM — an invariant formulation
Ferreira, P.M.; Grzadkowski, B.; Øgreid, Odd Magne; Osland, Per (Journal article; Peer reviewed, 2023)Soft breaking of a symmetry requires an invariance of the dimension-4 part of the Lagrangian and non-trivial variation of the lower-dimensional part. However, in general, separation between the dim-4 and lower-dimensional ...