2026-09-21T01:46:26Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/913882026-06-17T14:42:26Zcom_1721.1_7582com_1721.1_7581col_1721.1_131022
Markus Klute.
Ralph, Duncan (Duncan Kelley)
Massachusetts Institute of Technology. Department of Physics.
Massachusetts Institute of Technology. Department of Physics
2014-11-04T21:33:03Z
2014-11-04T21:33:03Z
2014
2014
http://hdl.handle.net/1721.1/91388
893432656
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2014.
71
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 119-123).
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.
by Duncan Ralph.
Ph.D.
123 pages
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Physics.
Observation and examination of a Higgs boson in the ZZ to four lepton channel
Thesis
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