Sökning: "Two-Higgs-Doublet Models"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Two-Higgs-Doublet Models.

1. 1. Exploring electroweak symmetry breaking in the scale-invariant Two-Higgs-Doublet Model

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Erik Rustas; [2023]
   Nyckelord :Two-Higgs-Doublet Models; 2HDM; Scale-invariance; Baryogenesis; BSM; Baryon Asymmetry; Coleman-Weinberg Potential; Theoretical Particle Physics; Physics and Astronomy;

   Sammanfattning : This thesis investigates the properties of a general scale-invariant Two-Higgs-Doublet Model and its phenomenological consequences with focus on the scalar sector. The concept suggests that introducing more CP-violation, both spontaneous and explicit, may make it possible to meet the Sakharov conditions and account for the Universe's baryon asymmetry. LÄS MER

3. 2. Searching for signatures of compositeness of the Higgs boson

   Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Mårten Bertenstam; [2021]
   Nyckelord :two-Higgs-doublet model; composite Higgs model; composite two-Higgs-doublet model; phase transition; cosmological phase transition; electroweak phase transition; gravitational waves; gravitational wave background; Physics and Astronomy;

   Sammanfattning : In this master thesis we consider some phenomenological aspects of two-Higgs-doublet models, both elementary and composite ones. The emphasis is on calculating and understanding first order phase transitions in such models, constrained to be in agreement with existing collider data on the Higgs sector. LÄS MER

4. 3. Exploring the Gauge Sector of a Composite Two-Higgs Doublet Model

   Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Adam Warnerbring; [2021]
   Nyckelord :two-Higgs doublet model; composite Higgs model; composite two-Higgs doublet model; Physics and Astronomy;

   Sammanfattning : In this bachelor thesis we investigate the gauge sector of a specific composite two-Higgs doublet model, allowing more freedom for the gauge couplings and compositeness scales. From the underlying parameters we generate model realisations with the correct top mass, Higgs mass and electroweak vacuum expectation value, that satisfy theoretical constraints such as unitarity and perturbativity. LÄS MER

5. 4. Explaining B-> D^(*) tau nu Decays with a Two Higgs Doublet Model using the Froggatt-Nielsen Framework

   Kandidat-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Emil Andersson; [2017]
   Nyckelord :Two Higgs Doublet Model; 2HDM; Froggatt-Nielsen; Flavon; B-meson; Higgs; Beyond Standard Model; BSM; Theoretical Particle Physics; Physics and Astronomy;

   Sammanfattning : In recent years, the BaBar, Belle and LHCb experiments have observed an excess of $B\to D^{(*)}\tau\nu$ decays compared to Standard Model predictions. In this thesis, we investigate if it is possible to explain this excess with a two Higgs doublet model using the Froggatt-Nielsen framework. LÄS MER

7. 5. Abelian gauge symmetries in the two-Higgs-doublet model

   Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Franz Teichmann; [2017]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : The two-Higgs-doublet model is a promising extension of the Standard Model of particle physics, but it contains a large number of free parameters. With the intention to constrain this freedom, the model has been studied under different symmetries. In particular, a full classification of Abelian global symmetries has been presented in 2011. LÄS MER