Search for dissertations about: "parton showers"
Showing result 1 - 5 of 9 swedish dissertations containing the words parton showers.
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1. Multiplet bases, recursion relations and full color parton showers
Abstract : The papers in this thesis all concern the treatment of colors in perturbative QCD, both in the context of hard scattering cross sections and for parton showers. The complexity of the color structure of QCD increases quickly with the number of external partons. READ MORE
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2. Merging Parton Showers and Matrix Elements
Abstract : This thesis considers models for describing high energy particle collisions. Existing phenomonological models are modified and new implementations made in order to achive a better description of states with several hard jets. To predict final state hadrons, parton showers are used together with pheonomenological hadronization models. READ MORE
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3. Colour Reconnection and Weak Showers
Abstract : This thesis consider the improvement of the simulation tools used to describe high energy particle collisions. These simulation programs are normally referred to as event generators. READ MORE
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4. Improving Parton Showers with Fixed Order Matrix Elements
Abstract : This thesis considers numerical simulations of high energy particle collisions, and improvements in the description of multiple collimated jets of hadrons in collision events in particular. In the event simulation software called event generators, the structure of multi-jet events is determined through an interplay of the input calculation, parton showers and phenomenological hadronisation models. READ MORE
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5. Multiparton Interaction Models and Parton Shower Studies
Abstract : This thesis involves phenomenological models for describing high energy particle collisions. One class of these models, multiparton interactions (MPI), deals with the fact that when colliding two hadrons, it is possible for more than one pair of their constituents to interact. READ MORE