Search for t-Channel Single Top Quark Production in p$$\bar{p}$$ Collisions at 1.96 TeV
- Univ. of California, Riverside, CA (United States)
I have performed a search for t-channel single top quark production in p$$\bar{p}$$ single number sub collisions at 1.96 TeV on a 366 pb-1 dataset collected with the D0 detector from 2002-2005. The analysis is restricted to the leptonic decay of the W boson from the top quark to an electron or muon, tq$$\bar{b}$$ → lvlb q$$\bar{b}$$ (l = e,μ). A powerful b-quark tagging algorithm derived from neural networks is used to identify b jets and significantly reduce background. I further use neural networks to discriminate signal from background, and apply a binned likelihood calculation to the neural network output distributions to derive the final limits. No direct observation of single top quark production has been made, and I report expected/measured 95% confidence level limits of 3.5/8.0 pb.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 892492
- Report Number(s):
- FERMILAB-THESIS-2006-15; TRN: US200711%%73
- Country of Publication:
- United States
- Language:
- English
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