University of Illinois Urbana-Champaign

Direct search for exotic spin zero particles in the di-lepton final state of Higgs-Z associated production in sqrt(s) = 13 TeV pp collisions

Ferrante, Andrew

Permalink

https://hdl.handle.net/2142/102492

Description

Title
Direct search for exotic spin zero particles in the di-lepton final state of Higgs-Z associated production in sqrt(s) = 13 TeV pp collisions
Author(s)
Ferrante, Andrew
Issue Date
2018-12-07
Director of Research (if dissertation) or Advisor (if thesis)
  • Errede, Steve
  • Martinez Outschoorn, Verena
Doctoral Committee Chair(s)
Peng, Jen-Chief
Committee Member(s)
Cooper, Lance
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • LHC
  • ATLAS
  • BSM
  • Beyond the Standard Model
  • Higgs Physics
  • Exotic Search
  • Scalar
  • Pseudoscalar
  • Z Boson
  • Di-lepton
Abstract
This thesis presents a search for a new exotic spin-0 particle a in 36.47 fb^(-1) of sqrt(s) = 13 TeV pp collisions recorded by the ATLAS detector at the LHC. This analysis is part of a broader search for a H ==> aa ==> bbbb, which uses a Higgs produced in association with a weak vector boson to improve triggering on events. The channel considered here uses Higgs-Z---associated production with two leptons in the final state. The analysis uses a likelihood-fit profile of a multivariate discriminant to place 95% confidence limit upper bounds on the cross section of the proposed signal. A study of the performance of the ATLAS Tile Calorimeter in extremely energetic events is also presented.
Graduation Semester
2018-12
Type of Resource
text
Permalink
http://hdl.handle.net/2142/102492
Copyright and License Information
(C) 2018 by Andrew Ferrante. All rights reserved.

Owning Collections

Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois
Dissertations and Theses - Physics
Dissertations in Physics