Sökning: "fermilab"

Hittade 4 avhandlingar innehållade ordet fermilab.

  1. 1. First Determination of the Electric Charge of the Top Quark and Studies of the Top Quark Pair Background to New Physics

    Författare :Per Hansson; Bengt Lund-Jensen; Jorgen D'Hondt; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; experimental particle physics; particle physics; standard model tests; dzero; fermilab; tevatron; top quark; top physics; electric charge; atlas; cern; lhc; large hadron collider; supersymmetry; Elementary particle physics; Elementarpartikelfysik; Physics; Fysik;

    Sammanfattning : This thesis is concerned with experimental investigations of properties of the top quark and processes involving this particle. In the first part of the thesis, the first determination of the electric charge of the top quark is presented. LÄS MER

  3. 2. Measurements of Angular Correlations in Minimum Bias Events and Preparatory Studies for Charged Higgs Boson Searches at the Tevatron and the LHC

    Författare :Camille Bélanger-Champagne; Claus Buszello; Tord Ekelöf; Nick van Remortel; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ATLAS; D0; LHC; Tevatron; CERN; Fermilab; QCD; Monte Carlo tunes; Matrix Element method; Charged Higgs boson; Tau lepton; Trigger; Physics; Fysik; Elementary particle physics; Elementarpartikelfysik; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Sammanfattning : Studies of minimum bias events at colliders probe the behavior of QCD in the non-perturbative regime. The phenomenology of events in this regime is described by empirical models that take many parameters, which all need to be tuned to the observed data. LÄS MER

  4. 3. Data processing for hybrid systems of detectors : aspects of preparation and analysis of elementary particle experiments at high energy

    Författare :Alexander Bergier; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The preparations of experiments for the Fermilab Hybrid System and the European Hybrid Spectrometer are described. The main emphasis is on the contribution to the software for these systems, and particularly the SURVEY programs package, performing the alignment and calibration of the spectrometer. LÄS MER

  5. 4. First determination of the electric charge of the top quark

    Författare :Per Hansson; Bengt Lund-Jensen; Peter Hansen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : In this thesis, the first determination of the electric charge of the top quark is presented using 370pb-1 of data recorded by the DØ detector at the Fermilab Tevatron accelerator. ttbar events are selected with one isolated electron or muon and at least four jets out of which two are b-tagged by reconstruction of a secondary decay vertex (SVT). LÄS MER