Search for dissertations about: "2HDM"

Showing result 1 - 5 of 7 swedish dissertations containing the word 2HDM.

  1. 1. Exploration of extended Higgs sectors, development of a displaced track trigger, and improvements in GRID middleware

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Max Isacson; Elin Bergeås Kuutmann; Patrizia Azzi; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; BSM; Supersymmetry; Standard Model; Higgs; 2HDM; Charged Higgs; Compositeness; Pattern Matching; GRID; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Abstract : Two possible solutions to the Standard Model (SM) fine-tuning problem are presented in this thesis, MSSM and Compositeness. The Higgs sector of the MSSM can be tested by searching for charged Higgs bosons. Two direct searches for charged Higgs bosons decaying into a top- and bottom-quark are performed using 13.2 and 36. READ MORE

  2. 2. Hunting the Charged Higgs Boson with Lepton Signatures in the ATLAS Experiment

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Alexander Madsen; Arnaud Ferrari; Johann Collot; Ellert Mattias; Albert de Roeck; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; charged Higgs boson; ATLAS; LHC; 2HDM; MSSM; particle physics; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Abstract : This thesis presents searches for a charged Higgs boson (H±) in proton-proton collisions with center-of-mass energies of 7 TeV and 8 TeV, using data collected by the ATLAS experiment at the Large Hadron Collider at CERN. Multiple search channels are used with the common characteristic of at least one charged lepton (electron or muon) that effectively reduces the multi-jet background and is used for efficient triggering. READ MORE

  3. 3. Searches for Higgs bosons with hadronically decaying τ-leptons Using Grid and Cloud computing techniques

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Henrik Öhman; Arnaud Ferrari; Paula Eerola; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LHC; ATLAS; Higgs; Charged Higgs; Tau lepton; 2HDM; MSSM; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Abstract : This thesis describes a measurement of the Standard Model Higgs boson coupling to fermions in decays to two τ-leptons, a search for charged Higgs bosons in decays to a τ-lepton and a neutrino, as well as the reconstruction, identification and triggering of hadronically decaying τ-leptons. The data considered are collected by the ATLAS experiment at the Large Hadron Collider. READ MORE

  4. 4. Phenomenology in multi-scalar extensions of the Standard Model

    University dissertation from Lund University

    Author : Astrid Ordell; [2020]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; BSM; 2HDMs; BSM; 2HDMs;

    Abstract : This thesis is composed of four papers, which all treat various extensions to the Standard Model (SM). The first two papers concern a particular supersymmetric, grand-unified theory (GUT), while in the latter two, we classify anomaly-free implementations of two-Higgs doublet models (2HDM) with a gauged abelian symmetry. Paper I. READ MORE

  5. 5. Search for Charged Higgs Bosons in e+e Collisions

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Mattias Ellert; [2001]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; Strålningsvetenskap; MEDICINE Physiology and pharmacology Radiological research Radiation biology; MEDICIN Fysiologi och farmakologi Radiologisk forskning Strålningsbiologi; High Energy Physics; Högenergifysik;

    Abstract : Several extensions to the Standard Model predict the existence of charged Higgs bosons. This thesis describes the search for such a particle using the data collected by the DELPHI detector at the Large Electron Positron (LEP) collider at the European laboratory for particle physics (CERN) in Geneva, Switzerland. READ MORE