Search for dissertations about: "High Energy Physics"

Showing result 16 - 20 of 978 swedish dissertations containing the words High Energy Physics.

  2. 16. Data Analysis in High-Energy Physics as a Differentiable Program

    Author : Nathan Simpson; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; differentiable programming; machine learning; particle physics;

    Abstract : Machine learning methods are now ubiquitous in physics, but often target objectives that are one or two steps removed from our physics goals. A prominent example of this is the discrimination between signal and background processes, which doesn’t account for the presence of systematic uncertainties – something crucial for the calculation of quantities such as the discovery significance and upper limits. READ MORE

  4. 17. Phenomenology of neutrino properties, unification, and Higgs couplings beyond the Standard Model

    Author : Stella Riad; Tommy Ohlsson; Nuria Rius; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Effective field theories; neutrino physics; extra dimensions; universal extra dimensions; Higgs physics; renormalization group running; Bayesian statistics; grand unified theories; Fysik; Physics;

    Abstract : The vast majority of experiments in particle physics can be described by the Standard Model of particle physics (SM). However, there are indications for physics beyond it. The only experimentally demonstrated problem of the model is the difficulty to describe neutrino masses and leptonic mixing. READ MORE

  5. 18. Diffraction in high-energy collisions

    Author : Christine Rasmussen; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; QCD; Soft QCD; phenomenology; Diffraction; Multiparton Interactions; Dipole model; Initial state evolution; BFKL evolution.; Fysicumarkivet A:2019:Overgaard;

    Abstract : This thesis concerns itself with low-momentum-transfer processes in high-energy particle collisions. These processes cannot be described in the framework of the fundamental theory of quantum chromodynamics (QCD), but rely on a pre-QCD approach, the Regge theory. READ MORE

  6. 19. Preparation and Characterization of Lead Halide Perovskites : Towards sustainable, cost-effective and upscalable solar cell manufacture

    Author : Kári Sveinbjörnsson; Erik Johansson; Pablo Docampo; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; perovskite solar cells; perovskite; photoconductivity; carbon nanotubes; transparent contact; ambient processing; water-based; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Abstract : The perovskite solar cell (PSC) is a recent contender within the photovoltaic research field. In a matter of a few years, the power conversion efficiency (PCE) of the PSC has catapulted from 4% to above 22%, which represents one of the fastest developments in the field. READ MORE

  7. 20. Imaging the high energy cosmic ray sky

    Author : Petter Hofverberg; Mark Pearce; Bob van Eijk; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astroparticle physics; Astropartikelfysik;

    Abstract : The Stockholm Educational Air Shower Array (SEASA) project is deploying an array of plastic scintillator detector stations on school roofs in the Stockholm area. Signals from GPS satellites are used to time synchronise signals from the widely separated detector stations, allowing cosmic ray air showers to be identified and studied. READ MORE