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Dissertation/Thesis Abstract

Search for the standard model Higgs boson in the Z boson-H boson decaying to positive muon-negative muon and bottom-anti-bottom quark channel in proton-antiproton collisions at the center of mass energy = 1.96 TeV
by Dong, Huishi, Ph.D., State University of New York at Stony Brook, 2007, 251; 3334940
Abstract (Summary)

This dissertation describes a search for the standard model Higgs boson (H) produced in association with a Z boson at the DØ experiment. This analysis is based on an integrated luminosity of L = 370 pb-1 of data. The pp¯ ZH → µ+µ - + bb¯ channel is studied where the Z boson decays to µ+µ- and the H decays to bb¯. In order to boost the signal rate we first introduce the optimized di-muon isolation probability for separating the Z + 2j signal from the multi-jet background, then use the optimized b-jet identifier to enhance the double b-tag signal significance. The upper limits on the σ( pp¯ZH) × Br(H bb¯) for Higgs masses between 105 GeV and 145 GeV are set at 95% C.L.

Indexing (document details)
School: State University of New York at Stony Brook
School Location: United States -- New York
Source: DAI-B 69/10, Dissertation Abstracts International
Subjects: Particle physics
Keywords: B-tagging, D0, Higgs boson, Muons, Standard Model, Tevatron
Publication Number: 3334940
ISBN: 978-0-549-87833-9
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