Sökning: "parton showers"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden parton showers.

  1. 1. Multiplet bases, recursion relations and full color parton showers

    Författare :Johan Thorén; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; QCD; Multiplet Bases; SU Nc ; SU N ; Recursion Relations; BCFW; Nc=3 Parton Showers; Parton Showers;

    Sammanfattning : 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. LÄS MER

  3. 2. Merging Parton Showers and Matrix Elements

    Författare :Nils Lavesson; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Parton Model; QCD Phenomenology; Phenomenological Models; QCD; Jets;

    Sammanfattning : 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. LÄS MER

  4. 3. Colour Reconnection and Weak Showers

    Författare :Jesper Roy Christiansen; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Merging; Weak interactions; Parton Showers; Event generators; hadron collisions; Colour Reconnection; Fragmentation; Fysicumarkivet A:2015:Christiansen;

    Sammanfattning : 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. LÄS MER

  5. 4. Improving Parton Showers with Fixed Order Matrix Elements

    Författare :Stefan Prestel; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matrix Element Merging; Parton Shower; QCD; Phenomenology; Fysicumarkivet A:2013:Prestel;

    Sammanfattning : 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. LÄS MER

  7. 5. Multiparton Interaction Models and Parton Shower Studies

    Författare :Richard Corke; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Multiparton Interactions; Parton Showers; Phenomenological Models; QCD Phenomenology;

    Sammanfattning : 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. LÄS MER