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Title: Search for a Standard Model Higgs Boson with a Dilepton and Missing Energy Signature

The subject of this thesis is the search for a standard model Higgs boson decaying to a pair of W bosons that in turn decay leptonically, H → W+W- → $$\bar{ℓ}$$vℓ$$\bar{v}$$. This search is performed considering events produced in p$$\bar{p}$$ collisions at √s = 1.96 TeV, where two oppositely charged lepton candidates (e+e-, e±μ±, or μ+μ}-), and missing transverse energy, have been reconstructed. The data were collected with the D0 detector at the Fermilab Tevatron collider, and are tested against the standard model predictions computed for a Higgs boson with mass in the range 115-200 GeV. No excess of events over background is observed, and limits on Standard Model Higgs boson production are determined. An interpretation of these limits within the hypothesis of a fourth-generation extension to the standard model is also given. The overall analysis scheme is the same for the three dilepton pairs being considered (e+e-, e±μ±, or μ+μ-); this thesis, however, describes in detail the study of the dimuon final state.
Authors:
 [1]
  1. Princeton Univ., NJ (United States)
Publication Date:
OSTI Identifier:
1018739
Report Number(s):
FERMILAB-THESIS--2011-20
TRN: US1103519
DOE Contract Number:
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DECAY; FERMILAB TEVATRON; HIGGS BOSONS; HYPOTHESIS; INTERMEDIATE BOSONS; LEPTONS; PRODUCTION; STANDARD MODEL; TRANSVERSE ENERGY Experiment-HEP