Observation and examination of a Higgs boson in the ZZ to four lepton channel
Author(s)
Ralph, Duncan (Duncan Kelley)
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Other Contributors
Massachusetts Institute of Technology. Department of Physics.
Advisor
Markus Klute.
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Results are presented on 5.1 fb- 1 of proton-proton collisions at a center of mass energy of 7 TeV and 19.7 fb- 1 at 8 TeV in a search for decays of the Standard Model (SM) Higgs boson to two Z bosons to four charged leptons. We observe a single excess above background expectation with a significance of 7.4 standard deviations at a mass of 125.6 ±0.4(stat) ±0.2(syst) GeV. This excess has a signal strength parameter ... We examine the transverse momentum spectrum of the new particle and find it to be consistent with the SM expectation, and also determine that the Standard Model JPC = 0++ is favored over the plausible alternative hypotheses.
Description
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2014. 71 Cataloged from PDF version of thesis. Includes bibliographical references (pages 119-123).
Date issued
2014Department
Massachusetts Institute of Technology. Department of PhysicsPublisher
Massachusetts Institute of Technology
Keywords
Physics.