Sökning: "Grand unified theories"

Hittade 5 avhandlingar innehållade orden Grand unified theories.

  1. 1. Phenomenology of SO(10) Grand Unified Theories

    Författare :Marcus Pernow; Tommy Ohlsson; Werner Rodejohann; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Grand unified theories; Renormalization group equations; Neutrino masses; Gauge coupling unification;

    Sammanfattning : Although the Standard Model (SM) of particle physics describes observations well, there are several shortcomings of it. The most crucial of these are that the SM cannot explain the origin of neutrino masses and the existence of dark matter. LÄS MER

  3. 2. Models of SO(10) Grand Unified Theories : Yukawa Sector and Gauge Coupling Unification

    Författare :Marcus Pernow; Tommy Ohlsson; Frank Deppisch; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; grand unified theories; renormalization group equations; neutrino masses; threshold effects; gauge coupling unification; Fysik; Physics;

    Sammanfattning : .... LÄS MER

  4. 3. Studies of effective theories beyond the Standard Model

    Författare :Stella Riad; Tommy Ohlsson; Mattias Blennow; Johan Rathsman; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Effective field theories; neutrino physics; extra dimensions; universal extra dimensions; Higgs physics; renormalization group running; Bayesian statistics; coupling scale factor; grand unified theories;

    Sammanfattning : The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. LÄS MER

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

    Författare :Stella Riad; Tommy Ohlsson; Nuria Rius; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  7. 5. Family symmetries and radiative corrections in multi-scalar extensions of the Standard Model

    Författare :Jonas Wessén; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Beyond the Standard Model; Trinification; Grand Unification; Three Higgs doublet models; Coleman-Weinberg potential; Supersymmetry; Left-Right symmetry; Fysicumarkivet A:2018:Wessén;

    Sammanfattning : The four articles contained in this thesis all concern aspects of model building beyond the Standard Model (BSM). While Paper I mainly serves as a ``tool paper'' in which the results can be used to simplify certain calculations of one-loop effects from new heavy particles, Paper II--IV all deal with consequences of family symmetries in several BSM scenarios. LÄS MER