Sökning: "universal extra dimensions"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden universal extra dimensions.

  1. 1. Cosmological aspects of universal extra dimensions

    Författare :Torsten Bringmann; Lars Bergström; Pierre Binetruy; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cosmology; dark matter; extra dimensions; Cosmology; Kosmologi;

    Sammanfattning : It is an intriguing possibility that our world may consist of more than three spatial dimensions, compactified on such a small scale that they so far have escaped detection. In this thesis, a particular realization of this idea -- the scenario of so-called 'universal extra dimensions' (UED) -- is studied in some detail, with a focus on cosmological consequences and appplications. LÄS MER

  2. 2. Particle Phenomenology of Compact Extra Dimensions

    Författare :Henrik Melbéus; Tommy Ohlsson; Andrea Romanino; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Higher-dimensional quantum field theories; universal extra dimensions; Arkani-Hamed–Dimopolous–Dvali ADD model; hierarchy problem; Kaluza– Klein dark matter; neutrino mass; seesaw mechanism; leptonic mixing; renormalization group running; collider phenomenology; Large Hadron Collider;

    Sammanfattning : This thesis is an investigation of the subject of extra dimensions in particle physics. In recent years, there has been a large interest in this subject. In particular, a number of models have been suggested that provide solutions to some of the problem with the current Standard Model of particle physics. LÄS MER

  3. 3. Astrophysical and Collider Signatures of Extra Dimensions

    Författare :Henrik Melbéus; Tommy Ohlsson; Jörn Kersten; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Extra-dimensional quantum field theories; universal extra dimensions; Kaluza-Klein dark matter; Arkani-Hamed-Dimopoulos-Dvali model; hierarchy problem; neutrino mass; seesaw mechanism; Large Hadron Collider phenomenology; Elementary particle physics; Elementarpartikelfysik;

    Sammanfattning : In recent years, there has been a large interest in the subject of extra dimensions in particle physics. In particular, a number of models have been suggested which provide solutions to some of the problems with the current Standard Model of particle physics, and which could be tested in the next generation of high-energy experiments. LÄS MER

  4. 4. 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. 5. 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