Search for dissertations about: "högenergi"

Showing result 1 - 5 of 15 swedish dissertations containing the word högenergi.

  1. 1. Nonlinear Evolution in High Energy QCD

    University dissertation from Theoretical High Energy Physics

    Author : Emil Avsar; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elementarpartikelfysik; quantum field theory; DIS; Elementary particle physics; Saturation; QCD; Small-x Physics; kvantfältteori; High energy interactions; cosmic rays; Kosmisk strålning; högenergi;

    Abstract : Popular Abstract in Swedish QCD vid höga energier är fortfarande inte väl förstådd. Svårigheter uppkommer ifrån en starkt icke-linjär dynamik, samt från icke-störningsmässiga fenomen. Analytiska beräkningar är oftast möjliga enbart för enkla leksaksmodeller, eller för asymptotiska energier. READ MORE

  2. 2. Isospin Breaking in Kaon Decays to Pions

    University dissertation from KFS AB

    Author : Fredrik Borg; Lunds universitet.; Lund University.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elementary particle physics; termodynamik; statistisk fysik; gravitation; relativitet; kvantmekanik; thermodynamics; Matematisk och allmän teoretisk fysik; Pseudo-scalar meson; Isospin Breaking; Chiral Perturbation Theory; Mathematical and general theoretical physics; classical mechanics; quantum mechanics; relativity; statistical physics; Weak Interaction; Strong Interaction; kvantfältteori; High energy interactions; Kärnfysik; Nuclear physics; klassisk mekanik; quantum field theory; cosmic rays; Kosmisk strålning; högenergi; Elementarpartikelfysik;

    Abstract : Popular Abstract in Swedish Amplituden för fem olika processer av typen K -> 3 Pi och tre olika av K -> 2 Pi har beräknats i kiral störningsteori. Beräkningen har genomförts flera gånger med olika approximationer. Först används isospin-approximationen, men detta resulterar i diskrepanser mellan teori och experiment. READ MORE

  3. 3. Hadronization Effects in the Strong Interaction

    University dissertation from Department of Theoretical Physics, Lund University

    Author : Patrik Edén; Lunds universitet.; Lund University.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; statistical physics; gravitation; relativity; Mathematical and general theoretical physics; classical mechanics; quantum mechanics; string fragmentation; baryon production; jets; QCD; hadronization; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; statistisk fysik; termodynamik; High energy interactions; cosmic rays; Kosmisk strålning; högenergi;

    Abstract : Different hadronization effects in high energy interactions are investigated. The frame-work is the Lund model for the strong interaction. A model for baryon production in jet fragmentation is presented and extended to baryon remnant fragmentation in deep inelastic scattering and hadron--hadron collisions. READ MORE

  4. 4. Delta++ Resonance Measurements in a High Multiplicity Environment

    University dissertation from Department of Physics, Lund University

    Author : Karim El Chenawi; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electronic; pad readout; VLSI; ASIC; chip-on-board; multi-step avalanche chamber; MSAC; tracking; position resolution; efficiency; delta resonance; heavy-ion collisions; freeze-out temperature; High energy interactions; cosmic rays; Kosmisk strålning; högenergi; Fysicumarkivet A:1999:El Chenawi;

    Abstract : The very large multiplicity of charged particles encountered in lead on lead collisions in the WA98 experiment at the CERN SPS provided new experimental challenges. Tracking detectors read out with high granularity were developed to achieve accurate position information in two dimensions, with the aim of reconstructing tracks with a minimum of combinatorial difficulties. READ MORE

  5. 5. Single-Photon Events in the DELPHI Experiment

    University dissertation from Department of Physics, Lund University

    Author : Elisabeth Falk; Lunds universitet.; Lund University.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; kvantfältteori; Elementarpartikelfysik; quantum field theory; DELPHI; STIC; LEP; single-photon events; PS; off-energy electrons; silicon-strip detector; coherent noise; emittance; Elementary particle physics; fast wire scanner; High energy interactions; cosmic rays; Kosmisk strålning; högenergi; Fysicumarkivet A:1998:Falk Harris;

    Abstract : A series of studies pertaining to the STIC calorimeter at the DELPHI experiment at LEP is presented, and a new generation of fast wire scanners for emittance measurements at PS is described. The STIC studies are centered around a single-photon analysis, in which the reaction e+ e- -> gamma + invisible particles was studied at center-of-mass energies of 161, 172 and 183 GeV. READ MORE