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Sumowidagdo, S. (2008). First Measurement of Top Quark Pair Production Cross-Section in Muon Plus Hadronic Tau
Final States. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-0407
This dissertation presents the first measurement of top quark pair production cross-section in events containing a muon and a tau lepton. The measurement was done with 1 fb−1 of data collected during April 2002 through February 2006 using the DØ detector at the Tevatron proton-antiproton collider, located at Fermi National Accelerator Laboratory (Fermilab), Batavia, Illinois. Events containing one isolated muon, one tau which decays hadronically, missing transverse energy, and two or more jets (at least one of which must be tagged as a heavy flavor jet) were selected.Twenty-nine candidate events were observed with an expected background of 9.16 events. The top quark pair production cross-section is measured to beσ (t¯t) = 8.0+2.8 −2.4 (stat)+1.8−1.7 (syst) ± 0.5 (lumi) pb.Assuming a top quark pair production cross-section of 6.77 pb for Monte Carlo signal top events without a real tau, the measured σ × BR isσ (t¯t) × BR(t¯t μ +τ + 2ν + 2b) = 0.18+0.13−0.11 (stat)+0.09−0.09 (syst) ± 0.01 (lumi) pb.
Cross-section, D0, Tevatron, Fermilab, Tau lepton, Top quark
Date of Defense
Date of Defense: November 26, 2007.
Submitted Note
A Dissertation submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Bibliography Note
Includes bibliographical references.
Publisher
Florida State University
Identifier
FSU_migr_etd-0407
Sumowidagdo, S. (2008). First Measurement of Top Quark Pair Production Cross-Section in Muon Plus Hadronic Tau
Final States. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-0407
