Measurement of the Top Quark Mass at CDF II

Thesis/Dissertation · Sat Jan 01 00:00:00 EST 2005

DOI:https://doi.org/10.2172/879108· OSTI ID:879108

Kovalev, Andrew N. ^[1]

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1. Univ. of Pennsylvania, Philadelphia, PA (United States)

The authors describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II Detector from p$$\bar{p}$$ collisions with √s = 1.96 TeV at the Fermilab Tevatron. The posterior probability distribution of the top quark pole mass is calculated using the differential cross-section for the t$$\bar{t}$$ production and decay expressed with respect to observed leptons and jets momenta. The presence of background events in the collected sample is modeled using calculations of the differential cross-sections for major background processes. This measurement represents the first application of this method to events with two charged leptons. In a data sample with integrated luminosity of 340 pb^-1, they observe 33 candidate events and measure M_top = 165.2 ± 61._stat ± 3.4_syst GeV/c².

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 879108
• Report Number(s): FERMILAB-THESIS-2003-49; TRN: US0700960
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DECAY
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
LEPTONS
LUMINOSITY
PROBABILITY
PRODUCTION
T QUARKS
Experiment-HEP