A Search for the Higgs Boson Decaying to Tau Pairs at the CMS Experiment

Doctoral Dissertation

Abstract

This thesis describes an experimental search for the Higgs boson. The search has been carried out at the Compact Muon Solenoid experiment using proton- proton collisions produced by the Large Hadron Collider. The dataset analyzed corresponds to the 4.6 fb-1 of data taken at √s = 7 TeV during the 2011 running period. This analysis attempts to identify events in which a Higgs decays to two tau leptons and one tau decays electronically and the other decays hadronically. A search is performed for a Higgs as predicted by the Standard Model of Particle Physics, and additionally a search is conducted for a Higgs in the context of the Minimally Supersymmetric Standard Model. The results are consistent with the background expectations and so upper limits are placed on the Higgs production cross-section times the branching ratio to tau leptons. In the Standard Model Higgs search, this analysis is able to exclude a Higgs at roughly 5x the Standard Model prediction.

Attributes

Attribute NameValues
URN
  • etd-08032012-111701

Author Louis James Antonelli
Advisor Dr. Colin Jessop
Contributor Dr. Randal Ruchti, Committee Member
Contributor Dr. Michael Hildreth, Committee Member
Contributor Dr. Jonathan Sapirstein, Committee Member
Contributor Dr. Colin Jessop, Committee Chair
Degree Level Doctoral Dissertation
Degree Discipline Physics
Degree Name PhD
Defense Date
  • 2012-07-20

Submission Date 2012-08-03
Country
  • United States of America

Subject
  • Higgs

  • CMS

  • physics

  • LHC

Publisher
  • University of Notre Dame

Language
  • English

Record Visibility and Access Public
Content License
  • All rights reserved

Departments and Units

Files

Please Note: You may encounter a delay before a download begins. Large or infrequently accessed files can take several minutes to retrieve from our archival storage system.