Search for dissertations about: "Electroweak"

Showing result 1 - 5 of 25 swedish dissertations containing the word Electroweak.

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

    Author : Anders Floderus; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electroweak; SUSY; Supersymmetry; Luminosity; LUCID; LHC; ATLAS; Slepton; Gaugino; Fysicumarkivet A:2014:Floderus;

    Abstract : 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. READ MORE

  4. 2. Precision Standard Model Phenomenology for High Energy Processes

    Author : Timea Vitos; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; precision phenomenology; Standard Model; NLO electroweak; decay coefficients; Drell-Yan process; top quark spin correlations; colour expansion; large-Nc limit; precision phenomenology; Standard Model; NLO electroweak; decay coefficients; Drell-Yan; top quark spin correlations; colour expansion; large-Nc truncation; Fysicumarkivet A:2023:Vitos;

    Abstract : The present status of particle physics is that the Standard Model has been completed with the discovery of theHiggs boson in 2012, but there is a multitude of phenomena in nature which is not accounted for by this model.Researchers are investigating possibilities for detecting new physics at the current particle physics facilities, withthe Large Hadron Collider (LHC) at the frontier. READ MORE

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

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

    Abstract : 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. READ MORE

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

    Author : Ola Törnkvist; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : 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. READ MORE

  7. 5. Predictions of Effective Models in Neutrino Physics

    Author : Johannes Bergström; Tommy Ohlsson; Rikard Enberg; KTH; []
    Keywords : 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;

    Abstract : 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. READ MORE