Essays about: "Hadron"

Showing result 11 - 15 of 144 essays containing the word Hadron.

  1. 11. Determining backgrounds with misidentified leptons in the ATLAS Higgs boson analysis

    University essay from KTH/Fysik

    Author : Leo Qiyuan Hu; [2023]
    Keywords : 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;

    Abstract : 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. READ MORE

  3. 12. Dark Matter signals at the Large Hadron Collider with Deep Learning

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Max Andersson; Edward Glöckner; Carl Löfkvist; [2023]
    Keywords : Machine Learning; Dark Matter; Classification; Regression; Particle Physics; Supersymmetry; LHC; CERN;

    Abstract : While holding a firm position in popular culture and science fiction, Dark Matter (DM) is nonetheless a highly relevant topic at the forefront of modern particle physics. We study the applicability of characterizing DM particle candidates SUSY neutralino and sneutrino using Deep Learning (DL) methods. READ MORE

  4. 13. Studies of the axial-vector transition form factors of the process Ω− → W−Ξ0 in chiral perturbation theory

    University essay from Uppsala universitet/Kärnfysik

    Author : Hélène De Munck; [2023]
    Keywords : Transition form Factors; Next-to-next-to-leading order; chiral perturbation theory; axial-vector; Ω− → W−Ξ0;

    Abstract : This work is included in a broader research of the hadron theory group of Uppsala University and its collaborators tackling the quest for an understanding of the quark distribution inside hadrons by joining threedifferent approaches of QCD namely chiral perturbation theory, dispersion theory and lattice QCD. This thesis contributes by computing in chiral perturbation theory, the quark-masses dependence of form factors. READ MORE

  5. 14. Glauber Monte-Carlo Simulation and Model Comparison in High-Energy Collisions

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Sebastião De Sousa Castanheira Miranda; [2023]
    Keywords : Physics and Astronomy;

    Abstract : In this thesis, a Glauber Monte-Carlo event generator is developed and used to analyze proton-Ion (p -$^{63}$Cu and p -$^{197}$Au) and Ion-Ion ($^{63}$Cu -$^{63}$Cu and $^{197}$Au -$^{197}$Au) collisions. Three different sub-collision models are implemented, the black disk, grey disk and oscillating grey disk models, and their validity is compared. READ MORE

  6. 15. On the vector transition form factors in the Ω- → Ξ0 W- decay

    University essay from Uppsala universitet/Kärnfysik

    Author : Magnus Bertilsson; [2023]
    Keywords : QCD; Form factors; Vector form factors; Chiral perturbation theory; One-loop diagrams; Hadrons; Hadron physics; Hyperon decay; Hadron structure;

    Abstract : To learn more about the structure of hadrons we study form factors. In the semi-leptonic decay Ω- → Ξ0W- two types of form factors arise namely the vector and axial-vector transition form factors. READ MORE