A Measurement of the t $$\bar{t}$$ Production Cross Section in p $$\bar{p}$$ Collisions at √s = 1.96-TeV using Soft Muon Tagging

Thesis/Dissertation · Tue Jan 01 00:00:00 EST 2008

DOI:https://doi.org/10.2172/935237· OSTI ID:935237

Grundler, Ulysses Allen ^[1]

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1. Univ. of Illinois, Urbana-Champaign, IL (United States)

I present a measurement of the t$$\bar{t}$$ 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 t$$\bar{t}$$ 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$$+0.9\atop{-0.8}$$ ± 0.6 pb, in agreement with the Standard Model.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359; FG02-91ER40677
• OSTI ID: 935237
• Report Number(s): FERMILAB-THESIS-2008-27; TRN: US0804156
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DECAY
ELECTRONS
FERMILAB COLLIDER DETECTOR
MUONS
PRODUCTION
SEMILEPTONIC DECAY
STANDARD MODEL
TRANSVERSE ENERGY
TRANSVERSE MOMENTUM
Experiment-HEP