A Measurement of the Top-Antitop Production Cross Section in Proton-Antiproton Collisions at Center of Mass Energy = 1.96 TeV Using Soft Muon Tagging
Grundler, Ulysses Allen
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https://hdl.handle.net/2142/80578
Description
Title
A Measurement of the Top-Antitop Production Cross Section in Proton-Antiproton Collisions at Center of Mass Energy = 1.96 TeV Using Soft Muon Tagging
Author(s)
Grundler, Ulysses Allen
Issue Date
2008
Doctoral Committee Chair(s)
Tony Liss
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Elementary Particles and High Energy
Language
eng
Abstract
I present a measurement of the tt¯ production cross section at s = 1.96 TeV using 2034 pb-1 of CDF Run II data using events with a high transverse momentum electron or muon, three or more jets, and missing transverse energy. The measurement assumes a t → Wb branching fraction of 100 percent. Events consistent with tt¯ decay are found by identifying jets containing heavy-flavor semileptonic decays to muons. The dominant backgrounds are evaluated directly from the data. Based on 248 candidate events and an expected background of 86.8+/-5.6 events, I measure a production cross section of 8.7+/-1.1+0.9-0.8+/-0.6 pb, in agreement with the Standard Model.
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