Search for dissertations about: "Elementary particle physics"

Showing result 21 - 25 of 91 swedish dissertations containing the words Elementary particle physics.

  2. 21. Measurement of azimuthal asymmetries in the hadronic final-state of deep inelastic scattering at HERA

    Author : Magnus Lindström; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; jets; DIS; azimuthal asymmetries; structure function; unfold; quantum field theory; Elementary particle physics; Elementarpartikelfysik; kvantfältteori; Physics; Fysik; Fysicumarkivet A:2000:Lindström;

    Abstract : Azimuthal asymmetries of the hadronic final state in deep inelastic scattering at HERA provide the opportunity to study the helicity of the interacting particles. We present a theoretical overview of the origin of these effects up to leading order in the strong coupling constant, $alpha_s$. READ MORE

  4. 22. η Meson Production in Proton-Proton Collisions at Excess Energies of 40 and 72 MeV

    Author : Henrik Petrén; Tord Johansson; Pawel Moskal; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik; Elementary particle physics; Elementarpartikelfysik; Nuclear Physics; kärnfysik;

    Abstract : The production of η mesons in proton-proton collisions has been studied with the WASA detector using internal pellet targets in the CELSIUS storage ring at the The Svedberg Laboratory in Uppsala. Data were taken at two beam energies, 1360 MeV and 1445 MeV, corresponding to CM excess energies of 40 and 72 MeV, respectively. READ MORE

  5. 23. Luminosity evaluation and fragmentation studies for the DELPHI experiment at LEP

    Author : Christina Zacharatou Jarlskog; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; luminosity; hadronization; Z boson; strong coupling constant; Elementary particle physics; Elementarpartikelfysik; quantum field theory; Fysicumarkivet A:2001:Jarlskog; LEP; DELPHI; kvantfältteori; Physics; Fysik;

    Abstract : The first subject addressed in this thesis is the contribution of the VSAT luminosity to the lineshape analysis, i.e. to the extraction of the mass and width of the Z0 boson from LEP1 DELPHI data. The VSAT detector has contributed to the lineshape parameter determination by providing a relative luminosity measurement of high accuracy. READ MORE

  6. 24. Potential for B-physics measurements with a fixed-target proton-collision experiment

    Author : Jenny Ivarsson; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elementary particle physics; CP Violation; quantum field theory; Elementarpartikelfysik; HERA-B; Fixed Target; kvantfältteori; B Physics; Monte Carlo Simulations; Fysicumarkivet A:1999:Ivarsson;

    Abstract : HERA-B is a high-energy physics experiment at HERA. It is a fixed-target experiment with a forward spectrometer to benefit from the strong boost of beauty hadrons. The main goal of HERA-B is to detect and measure the degree of CP violation in exclusive B-decays, with emphasis on the {em golden} decay, $golden$. READ MORE

  7. 25. Particle Interferometry in e+e- Annihilation

    Author : Raluca Muresan; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum field theory; DELPHI; Elementary particle physics; LEP; e e- annihilation; Interferometry; Correlation; Bose-Einstein; Elementarpartikelfysik; kvantfältteori; Fysicumarkivet A:2000:Muresan;

    Abstract : This thesis is the result of three years of work in Lund University, as a member of DELPHI group, at the Elementary Particle Physics Department. The work concerns the study of Bose-Einstein correlations in electron-positron collisions at LEP. READ MORE