Measurement of the top pair-production cross section in the dilepton channel in proton-antiproton collisions at a $$\sqrt{s}$$ = 1.96 TeV
- Univ. of Rochester, NY (United States)
The top quark was discovered by CDF and D0 in 1995, in Run I. This thesis presents the results of the top production cross-section measurement, in the dilepton channel, using data taken at the Collider Detector at Fermilab (CDF) in p$$\bar{p}$$ collisions, at a center-of-mass energy of √ s =1.96 TeV. The dataset represents an integrated luminosity of 193 pb-1 and was collelcted between the period March 2002 - September 2003. Thirteen events were observed (1 e/e, 9 e/ μ , 3 μ/μ ), passing the selection requirements, with an estimated background of 2.8 ± 0.7 events. These are used to measure a t$$\bar{t}$$ ross-section of σ t$$\bar{t}$$ = 8.4_ $$+3.2\atop{-2.7}$$ (stat)_ $$+1.5\atop{- 1.1}$$ (syst) ± 0.5 (lum)pb. This is in a good agreement with the Standard Model prediction of σ$$t\bar{t}$$ = 6.7_ $$+0.71\atop{- 0.88}$$ pb, for a top quark mass of 175 GeV/c2 . Also few kinematical distributions are compared with the Standard Model and found to agree well.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1369283
- Report Number(s):
- FERMILAB-THESIS-2005-91; UMI-31-56817; 689688
- Country of Publication:
- United States
- Language:
- English
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