Essays about: "higgs boson"

Showing result 21 - 25 of 65 essays containing the words higgs boson.

  1. 21. Study of Kinematic Variables in Multi-Lepton Final States in search for an Exotic Higgs Boson

    University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Axel Gallén; [2021]
    Keywords : LHC; ATLAS; CERN; Standard Model; Higgs boson; Exotic Higgs boson; Kinematic variables; Physics and Astronomy;

    Abstract : The Large Hadron Collider in Geneva was constructed as a discovery machine. So far, the Higgs boson has been the only discovery at the Large Hadron Collider, but physicists keep on pushing the limit in order to discover new particles. READ MORE

  3. 22. Simulation of Higgs boson pair production in Vector Boson Fusion at the LHC

    University essay from Uppsala universitet/Högenergifysik

    Author : Daniela Romero; [2021]
    Keywords : Higgs boson; vbf; vector boson fusion; high energy physics; lhc; proton collision; madgraph; simulation;

    Abstract : MadGraph5 is used to generate events with Higgs boson pairs from vector boson fusion (VBF) at leading-order (LO) and next-to-leading-order (NLO) accuracy in QCD. The simulations are used to compute fiducial cross-sections in proton-proton collisions at a centre-of-mass energy of 13 TeV, using several kinematic cuts on the outgoing jets, e.g. READ MORE

  4. 23. Using Neural Networks to Probe the Parameter Space of a 3HDM with a U(1) times Z2 Flavor Symmetry

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Ludvig Siwe; [2020]
    Keywords : Three Higgs Doublet Model; 3HDM; Machine Learning; Neural Network; Genetic Algorithm; Physics and Astronomy;

    Abstract : Probing the physical regions in large parameter spaces of typical Standard Model (SM) extensions can be a very difficult computational task. In this thesis project, a new framework has been developed that utilises well-known Machine Learning (ML) techniques in the form of neural networks trained by a genetic algorithm. READ MORE

  5. 24. A Program for SU(N) Color Structure Decomposition into Multiplet Bases Using Wigner 3j and 6j Coefficients

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Andris Potrebko; [2020]
    Keywords : Colour Structure; QCD; Quantum Chromodynamics; SU N ; Multiplet bases; Color structures; Physics and Astronomy;

    Abstract : The increased capacity of elementary particle accelerators raises the demand for the simulation data of the experiments. One of the bottlenecks in the simulations is the QCD color structure calculation, which is usually treated using non-orthogonal and overcomplete sets of bases. READ MORE

  6. 25. Reconstruction of challenging signatures characteristic to new physics beyond the Standard Model

    University essay from Uppsala universitet/Högenergifysik

    Author : Timmy Lindgren; [2020]
    Keywords : Reconstruction; Identification; photon-jets; ATLAS;

    Abstract : A study of photon-jets and their identification variables computed in the electromagnetic calorimeter of an in-house, ATLAS-like, detector model developed at Uppsala University for full-simulations is presented. The signal, which is based on the Composite Higgs Model, considers the pair production of vector-like top quarks, denoted t', with the successive decays t' to S and a Standard Model top quark and S to two photons, where S is a new pseudo-scalar boson. READ MORE