Essays about: "two Higgs doublet model"
Showing result 11 - 15 of 15 essays containing the words two Higgs doublet model.
-
11. STUDY OF THE ELECTRON ELECTRIC DIPOLE MOMENT IN A FROGGATT NIELSEN TWO-HIGGS DOUBLET MODEL
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : We consider a two Higgs doublet model with a U(1) Froggatt Nielsen mechanism. The Froggatt Nielsen charges of the fermions are chosen such that the correct mass structure and quark mixing matrix is obtained, and such that Flavor Changing Neutral Currents are within experimental limits. READ MORE
-
12. Strongly First Order Phase Transitions and The Possibility of Electroweak Baryogenesis in General Two-Higgs-Doublet Models
University essay from Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : The possibility to have a strongly first order electroweak phase transition, which is one of the Sakharov conditions for electroweak baryogenesis together with $\mathcal{CP}$ violation and baryon number violation, in general Two-Higgs-Doublet Models (2HDMs) is here investigated. Different kinds of $\mathbb{Z}_{2}$ breaking beyond standard assumptions are studied, in particular by allowing it to be completely broken as well as by assuming it to be only approximately preserved in the Yukawa sector. READ MORE
-
13. Flavour-changing neutral currents in top quark decays to Higgs bosons in a two-Higgs-doublet model
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : In this thesis top quark decays to a charm quark and a (CP even) Higgs boson are investigated in a general two-Higgs-doublet model (2HDM) allowing flavour-changing neutral currents. The theory behind 2HDMs is introduced and the specific choice of 2HDM is put to test under theoretical constraints that require the potential in the Lagrangian density of the model to satisfy vacuum stability, tree-level unitarity and perturbativity. READ MORE
-
14. Electroweak phase transitions in the two-Higgs-doublet model after the first LHC run
University essay from Uppsala universitet/HögenergifysikAbstract : One of the main motivations to consider beyond standard model physics is the observed matter-antimatter asymmetry of our universe, since it cannot be explained by the standard model. In this thesis we study the two-Higgs-doublet model (2HDM) in order to test if there are regions of the parameter space of this model which are not yet excluded by experiment and which can explain the asymmetry by the process of electroweak baryogenesis. READ MORE
-
15. RGE properties of 2HDM in relation to data on B->Dtu
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationAbstract : In this thesis we investigate the properties of a specific two Higgs Doublet Model (2HDM) that can be used to explain the data on B->Dtu and B->D*tu, which deviate from the Standard Model (SM) by 3.4 sigma. The 2HDM is the simplest extension of the Standard model scalar sector. READ MORE
