Search for non-standard model behavior, including CP violation, in Higgs production and decay to ZZ* /

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Bibliographic Details
Author / Creator:Webster, Jordan, author.
Ann Arbor : ProQuest Dissertations & Theses, 2015
Description:1 electronic resource (120 pages)
Format: E-Resource Dissertations
Local Note:School code: 0330
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Other authors / contributors:University of Chicago. degree granting institution.
Notes:Advisors: James E. Pilcher Committee members: Marcela Carena; Woowon Kang; Melvyn J. Schochet.
Dissertation Abstracts International, Volume: 77-02(E), Section: B.
Summary:This thesis presents an ATLAS study of the tensor structure characterizing the interaction of the scalar Higgs boson with two Z bosons. The measurement is based on 25 fb-1 of proton-proton collision data produced at the Large Hadron Collider with center of mass energy equal to 7 and 8 TeV. Nine discriminant observables in the four lepton final state are used to search for CP-odd and CP-even components in the Lagrangian beyond those of the Standard Model. These are represented by (n/a) tanalpha and (n/a), respectively. Both of these parameters are found to be consistent with their predicted Standard Model values of zero. Values outside the intervals --3.24 < (n/a) tanalpha < 0.91 and --0.82 < (n/a) < 0.87 are excluded at 95% confidence level. These results are combined with a search for the same structure in the interaction of the Higgs with pairs of W bosons.