Sökning: "ATLAS detektorn"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden ATLAS detektorn.

  1. 1. Non-linear effects in the ATLAS track-counting luminosity measurement

    Master-uppsats, Uppsala universitet/Högenergifysik

    Författare :Daniel Gautam; [2023]
    Nyckelord :Particle physics; CERN; ATLAS; Track counting; Luminosity; Monte Carlo; Track Selection;

    Sammanfattning : In this thesis the linearity of the ATLAS track-counting luminosity measurement is studied using two different sets Monte Carlo simulated crossings of proton-proton bunches. A primary high-momentum, or hard, interaction must be chosen for the Monte Carlo simulation. LÄS MER

  3. 2. Determining backgrounds with misidentified leptons in the ATLAS Higgs boson analysis

    Master-uppsats, KTH/Fysik

    Författare :Leo Qiyuan Hu; [2023]
    Nyckelord :Particle Physics; ATLAS detector; Fake Factor method; Higgs boson; lepton misreconstruction; misidentified events; Partikelfysik; ATLAS detektorn; Fake Factor-metoden; Higgs boson; lepton felrekonstruktion; felidentifierade händelser;

    Sammanfattning : This thesis presents an analysis of misidentified leptons in the Higgs boson decaychannel H → W W ∗ → lνlν. Misidentified leptons, resulting from jets misidentifiedas leptons, mimic the signal of a Higgs boson decay, resulting in a backgroundcontribution to the signal. LÄS MER

  4. 3. A literature review of FASERν - An emulsion detector for collider neutrinos

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

    Författare :Lisa Andersson Loman; [2021]
    Nyckelord :physics; neutrinos; FASER; Standard Model; Beyond Standard Model; BSM; particles; elementary particles; neutrino cross sections; LHC; FASER nu; particle physics; physics experiment; CERN; long lived particles; Physics and Astronomy;

    Sammanfattning : In 2021, the ForwArd Search ExpeRiment (FASER) will start searching for light and weakly coupled particles 480m from the proton-proton collision point of ATLAS at the Large Hadron Collider (LHC). The FASER main detector will have a sub-detector, FASERν, sensitive to high-energy collider neutrinos of all flavours. LÄS MER

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

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

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

    Sammanfattning : 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. LÄS MER

  7. 5. Coordinate conversion for the Hough transform

    Kandidat-uppsats, Uppsala universitet/Högenergifysik

    Författare :Edvin Eriksson; [2021]
    Nyckelord :particle accelerator; coordinate transformation; hough transform; uppsala; bachelor thesis; kandidatarbete; uppsala; fysik;

    Sammanfattning : This thesis attempts to develop a conversion algorithm between local coordinates in constituent detector modules and global coordinates encompassing the whole detector structure in a generic detector. The thesis is a part of preparatory work for studying the Hough Transform as a means of track reconstruction in the level-1 hardware trigger in the upgraded trigger and data acquisition (TDAQ) system in the phase 2 upgrade of the ATLAS detector at CERN. LÄS MER