A Measurement of the production cross section of t$$\bar{t}$$ in p$$\bar{p}$$ collisions at √s = 1.96 TeV using secondary vertex b-tagging.

Thesis/Dissertation · Wed Dec 01 00:00:00 EST 2004

DOI:https://doi.org/10.2172/15016943· OSTI ID:15016943

Bachacou, Henri ^[1]

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1. Univ. of California, Berkeley, CA (United States)

A measurement of the t$$\bar{t}$$ pair production cross section is presented using 162 pb ^-1 of data collected by the CDF experiment during Run II at the Tevatron. t$$\bar{t}$$} events in the lepton+jets channel are isolated by identifying electrons and muons, reconstructing jets and transverse missing energy, and identifying b jets with a secondary vertex tagging algorithm. The efficiency of the algorithm is measured in a control sample using a novel technique that is less dependent on the simulation. For a top quark mass of 175 GeV/c² , a cross section of σ_t$$\bar{t}$$ = 5.6$$+1.2\atop{-1.1}$$(stat.)$$+0.9\atop{-0.6}$$(syst.)pb is measured.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 15016943
• Report Number(s): FERMILAB-THESIS-2004-48; TRN: US0605156
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A CENTERS
ALGORITHMS
CROSS SECTIONS
EFFICIENCY
ELECTRONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
MUONS
PAIR PRODUCTION
PRODUCTION
SIMULATION
T QUARKS
Experiment-HEP