Sökning: "Electroweak"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet Electroweak.

  1. 1. Luminosity determination and searches for supersymmetric sleptons and gauginos at the ATLAS experiment

    Författare :Anders Floderus; Partikelfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electroweak; SUSY; Supersymmetry; Luminosity; LUCID; LHC; ATLAS; Slepton; Gaugino; Fysicumarkivet A:2014:Floderus;

    Sammanfattning : This thesis documents my work in the luminosity and supersymmetry groups of the ATLAS experiment at the Large Hadron Collider. The theory of supersymmetry and the concept of luminosity are introduced. The ATLAS experiment is described with special focus on a luminosity monitor called LUCID. LÄS MER

  2. 2. The Powers of Perturbation Theory : Loops and Gauge Invariance in Particle Physics

    Författare :Johan Löfgren; Rikard Enberg; Kimmo Kainulainen; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Beyond the Standard Model; Electroweak phase transition; Perturbation theory; High Energy Physics; Högenergifysik;

    Sammanfattning : The Standard Model is the best particle physics theory we have, but there are still phenomena that it cannot explain. In this thesis I have worked on two different projects that connect to two of the biggest unsolved questions of the Standard Model. LÄS MER

  3. 3. Structure of the Ground State of the Electroweak Gauge Theory in a Strong Magnetic Field

    Författare :Ola Törnkvist; Chalmers University of Technology; []
    Nyckelord :;

    Sammanfattning : This thesis deals with the construction of perturbative methods for analyzing the phase transition of the electroweak gauge theory in a strong magnetic field at zero temperature. The first part is a self-contained description of the methods and results. The second part contains the articles on which the first part is based. LÄS MER

  4. 4. Predictions of Effective Models in Neutrino Physics

    Författare :Johannes Bergström; Tommy Ohlsson; Rikard Enberg; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Neutrino mass; lepton mixing; Majorana neutrinos; effective field theory; Weinberg operator; seesaw models; low-scale seesaw models; inverse seesaw; right-handed neutrinos; renormalization group; threshold effects; neutrinoless double beta decay; Elementary particle physics; Elementarpartikelfysik;

    Sammanfattning : Experiments on neutrino oscillations have confirmed that neutrinos have small, but non-zero masses, and that the interacting neutrino states do not have definite masses, but are mixtures of such states.The seesaw models make up a group of popular models describing the small neutrino masses and the corresponding mixing. LÄS MER

  5. 5. Measurements of supersymmetry with the ATLAS experiment at the LHC

    Författare :Jesper Söderqvist; KTH; []
    Nyckelord :;

    Sammanfattning : If supersymmetry exists at the electroweak scale, then it should be possible to discover it at CERN's next accelerator, the Large Hadron Collider (LHC). The phenomenology predicted by the supergravity inspired mimmal supersymmetric standard model (SUGRA) is examined in detail. LÄS MER