rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS
  name:
    name part: Pandolfi, Francesco.
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: SpringerLink (Online service)
  type of resource: text
  origin info:
    place:
      place term: gw
    date issued: 2013
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: electronic resource
    reformatting quality: access
    form: remote
    extent: XV, 128 p. online resource.
  abstract: The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products. In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H → ZZ → l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons. The events passing the selection requirements in 4.6 fb -1 of data collected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the searches done with jets at CMS.
  table of contents: Introduction -- The Hunt for the Higgs Boson -- The Large Hadron Collider and the CMS Experiment -- Jet Reconstruction and Calibration -- Event Selection -- Systematic Uncertainties -- Statistical Interpretation of Results -- Conclusions.
  note: by Francesco Pandolfi.
  subject:
    topic: Physics
  subject:
    topic: Quantum field theory
  subject:
    topic: String theory
  subject:
    topic: Nuclear physics
  subject:
    topic: Physical measurements
  subject:
    topic: Measurement
  subject:
    topic: Physics
  subject:
    topic: Particle and Nuclear Physics
  subject:
    topic: Quantum Field Theories, String Theory
  subject:
    topic: Measurement Science and Instrumentation
  classification: QC770-798
  classification: 539.7
  related item:
    title info:
      title: Springer eBooks
  related item:
    title info:
      title: Springer Theses, Recognizing Outstanding Ph.D. Research
  identifier: 9783319009032
  identifier: http://dx.doi.org/10.1007/978-3-319-00903-2
  record info:
    record creation date: 130814
    record change date: 20151218121824.0
    record identifier: 978-3-319-00903-2