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In this thesis, the space--time picture of the hadronization model has been implemented in the event generator Pythia. From this implementation, the hadronic behaviour has been studied for different scenarios, in order to begin addressing the unexpected collective behaviour of high-multiplicity pp events, which is typical for heavy-ion collisions. First, the temporal and radial evolution of pp and
Throughout this work we investigate a trinification-based grand unification theory (GUT) with a global family symmetry, as a radiative origin of the Standard Model (SM). We show that after spontaneous symmetry breaking of the trinification gauge group, we can in theory construct an effective left-right symmetric model (LRSM) which breaks to the SM gauge group through radiative breaking induced by
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. However, breaking global symmetries spontaneously leads to u
This thesis is a study of conflicting perceptions provoked by Enhedslisten’s, Danish political party, attempt to practice socialist feminism organizationally. I locate three sites of conflicts; socialism(s) and organization of power, feminism(s), and queer culture and approach them from a theoretical framework of primarily Foucault, Panebianco, Halley, Young, Fraser, and Butler. I conduct four eth
We review the factorization theorem for the production of a heavy color-neutral final state with a transverse momentum much smaller than its invariant mass in the framework of soft collinear effective field theory (SCET). This phase space region is plagued by large logarithms of widely separated scales, including large logarithms of rapidity ratios, that need to be resummed for sensible results. I
We have studied left-right-symmetric (LR) model building in two specific instances: the Minimal Left-Right-Symmetric Model (MLRM), with gauge group SU(3)_C × SU(2)_L × SU(2)_R × U(1)_{B-L} and parity as the LR symmetry; and a non-supersymmetric, trinified theory, with gauge structure SU(3)_L × SU(3)_R × SU(3)_C × Z_3 and an additional, novel, SU(3) family symmetry. For the MLRM, we have rederive
The interactions between airway epithelial cells (AECs) and dendritic cells (DCs) play an important role in the sensitization towards airborne allergens. Not much is known about the underlying mechanisms and novel in vitro approaches are needed, which include the different involved cell types in order to investigate what happens at the molecular level during sensitization. In this project, one aim
Problemdiskussion: Sektorn för olja och gas är inte särskilt mogen när det gäller kunskapen om försörjningskedjor. Det valda företaget för fallstudien, Maersk Drilling (MD), har problem med ett splittrat IT-landskap och dålig datakvalitet. Det har orsakat problem med ineffektiva och komplexa processer där det krävs onödig kommunikation, parallell inmatning av data, etc. Inom upphandlingar och inkProblem Discussion: The oil and gas sector is not very mature in terms of supply chain management. The chosen case company, Maersk Drilling (MD), has problems with a split IT-landscape with poor data quality. It has caused problems with inefficient and complex processes with much communication required, parallel information and more. Within procurement it translates to problems in spend managemen
In this thesis a chirally symmetric technicolor model is investigated as an extension to the Standard Model. The extension is based on low-energy QCD, with a linear sigma model used to induce the additional degrees of freedom corresponding to the lightest particles of the new techni-sector. The main goal is to incorporate the Standard Model Higgs into the new model, as to explain its vacuum expect
High energy particle collisions involve complex physics, beyond analytical control. Instead, Monte Carlo event generators like Pythia have been used to simulate particle collisions since decades. A study of the production of heavy quarks (namely, charm and bottom) is presented for two different scenarios: lepton (e+e−) and hadron (pp) collisions. Electron- positron collisions at the Z0 resonance a
In this thesis a method for decomposing QCD colour structures into multiplet bases is described. The method is applicable for any number of gluons and quarks. To achieve the decomposition requires the knowledge of group theoretical weights, so-called Wigner 3j and 6j coefficients. The number of required coefficients have been calculated for up to 12 external gluons, and been shown to scale well in
We take a look at the properties of scalar fields in anti--de--Sitter space in five dimensions. More specifically we define bulk--to--boundary and bulk--to--bulk propagators for a five--dimensional scalar field and use these to calculate four--point functions. Finally we take a look at two--point functions and three--point functions and numerically calculate masses, residues and decay constants fo
The European Union (EU) is heading for an increased economic, legal and political integration of its Member States. In spite of all the efforts to bring the people of Europe closer, significant differences in national laws and cultures still exist. Enhanced understanding of such disparities can create opportunities for companies operating on the EU market in several areas, including the way to dea
Increasing evidence on impacts from climate change an variability, suggests that poor rural communities in semi-arid sub-Saharan Africa need to adapt in order to reduce effects on their livelihoods. In semi-arid areas characterized by high poverty, small reservoirs even though most of them are performing below average, act as important assets that support a wide range of livelihoods. However, in t
Historically, the recognition of social rights began with the International Labour Organization’s 1944 Declaration of Philadelphia and its principle of social justice. Since then, a number of international human rights instruments have enshrined the rights to social protection and non-discrimination. The Canadian and United States governments have varied greatly in their respective approaches to s
Local parties are a powerful political factor in many Swedish municipalities but haven't gained as much attention as new parties on the national level. In this essay we try to create an understanding of why inhabitants of these municipalities give electoral support to these local parties. Rather than focusing on new political cleavages or institutional changes, the theory by Lawson & Merkl
In 1887, psychical researchers Richard Hodgson and S. J. Davey published a study that revealed counterintuitive aspects of human cognition: How healthy, sober, honest observers of events can be prone to seemingly remarkable errors of eyewitness testimony. Their report, titled ‘The Possibilities of Mal-Observation and Lapse of Memory from a Practical Point of View’ included a collection of eyewitne
This paper reports preliminary findings from an on-going majorresearch project on the sustainability transformations of major firms listed inSweden (often operating globally). We analyze a highly particular aspect of thesetransformations: Technology barriers to tracking (and thus enabling) progressaccording to the Science-Based Targets (SBT). Progressing on these carbondioxide emission reduction t
