Effective Field Theory Interpretation for Measurements of Top Quark Pair-Production in Association with a W or Z Boson

Doctoral Dissertation

Abstract

Using effective field theory, the effects of new particles or interactions can be captured in a model-independent way by supplementing the standard model Lagrangian with higher-dimensional operators. A measurement of the cross section for top quarks produced in association with a W or Z boson, using 19.5/fb of proton-proton collisions with a center-of-mass energy of 8 TeV, collected by the CMS experiment at the LHC, is extended within this framework to set constraints on the Wilson coefficients of five dimension-six operators. An additional measurement of the same processes using 35.9/fb of proton-proton collisions with a center-of-mass energy of 13 TeV collected by the CMS experiment is used to perform a more sophisticated study of eight dimension-six operators and present bounds on their Wilson coefficients.

Attributes

Attribute NameValues
Author Anna Elizabeth Woodard
Contributor Daniel Bardayan, Committee Member
Contributor Adam Martin, Committee Member
Contributor Mitchell Wayne, Committee Member
Contributor Kevin Lannon, Research Director
Degree Level Doctoral Dissertation
Degree Discipline Physics
Degree Name PhD
Defense Date
  • 2018-02-27

Submission Date 2018-03-22
Subject
  • physics

  • dimension six operator

  • effective field theory

  • top quark

Language
  • english

Record Visibility and Access Public
Content License
Departments and Units

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