Sökning: "dark matter theory"

Visar resultat 1 - 5 av 26 uppsatser innehållade orden dark matter theory.

  1. 1. The Higgs Width in Higgs production in association with a W+ boson

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Wijeratne Mohandiramge Umashi Navisha Fernando; [2023]
    Nyckelord :Higgs boson; Higgs width; off-shell; on-shell; narrow-width approximation; MadGraph5_MC@NLO; W boson; supersymmetry; dark matter; Physics and Astronomy;

    Sammanfattning : The width of the Higgs boson is a quantity that cannot be measured directly from the on-shell Higgs peak; it would have to be measured indirectly. In 2013, Caola and Melnikov developed a method to determine the Higgs width by using off-shell and on-shell cross-sections and applying the narrow-width approximation. LÄS MER

  3. 2. Trigger-Level Multiple Electron Event Classification with LDMX using Artificial Neural Networks

    Master-uppsats, Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Jacob Lindahl; [2023]
    Nyckelord :LDMX; ANN; CNN; GNN; RNN; DM; Physics and Astronomy;

    Sammanfattning : Artificial neural networks is a powerful tool for classifying and identifying patterns in large amounts of data. One of the possible tasks of these networks is classification of data into categories. LÄS MER

  4. 3. Void Evolution and Cosmic Star Formation

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Joel Wasserman; [2023]
    Nyckelord :Void; Void Evolution; Cosmic Void; Star Formation Rate; Star Formation History; Cosmic Star Formation; Cosmology; Spherical Evolution Model; SvdW; Vdn; Excursion Set Theory; Excursion Set Formalism; Astrophysics; Astronomy; Cosmic Web; Matter Transfer; Tomrum; Tomrumsutveckling; Kosmiska Tomrum; Stjärnbildningshastighet; Stjärnbildningshistorik; Kosmisk stjärnbildning; Kosmologi; Sfärisk Evolutionsmodell; SvdW; Vdn; Exkursionsset teori; Exkursionsset Formalism; Astrofysik; Astronomi; Kosmiska Spindelnätet; Masstransport;

    Sammanfattning : The rate at which stars have formed throughout the history of theuniverse is not constant, it started out slow, increased until around redshift ∼ 2 when it reversed and became slower again. The reason for this behaviour is still being investigated with various models and simulations usually based upon dark matter halos. LÄS MER

  5. 4. Can Dwarf Galaxies Tell Us How the Milky Way Formed?

    Master-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Författare :Þóra Karlsdóttir; [2023]
    Nyckelord :Dwarf Galaxy; Milky Way; Physics and Astronomy;

    Sammanfattning : Dwarf galaxies are a key component in understanding the evolution of galaxies and provide tests on the standard cosmological $\Lambda$ Cold Dark Matter model. According to the formation hierarchy, dwarf galaxies are the pieces that create all galaxies. Our current understanding of dwarf galaxies faces discrepancies between theory and observations. LÄS MER

  7. 5. Beyond Dark Tourism

    Magister-uppsats, Södertörns högskola/Turismvetenskap

    Författare :Geraldinne Johansson Retamal; [2023]
    Nyckelord :Dark Tourism; Dark Spot; Dark Site; Dark Place; Thanatourism; Dark Tourists; Framework; Spectrum; Categorization; Interpretation; Hermeneutic;

    Sammanfattning : Background: The development of Dark Tourism has evolved much over recent years. The term Dark Tourism is too general for a subject matter that is multilayered and complex. Aim of the Thesis and Research Question: Is to present the consistencies, vagueness, and disagreements of the different categorizations in Dark Tourism. LÄS MER